bluuebunny/crossref_metadata_2025 huggingface dataset:
THE DIELECTRIC PROPERTY AND DEFECTS OF La-DOPED BaTiO3 CERAMICS
Authors: TANG CHAO-QUN  , YU LI-HUA  ,   华中理工大学物理系,武汉430074
Published: November 2020

The dielectric permittivity of La-doped BaTiO3 ceramics exhibits reverse U-shape variation with increasing La-content in the range of 0.4 at% La, and with increasing frequency f it decreases quickly for f≤1000 Hz and changes very slowly for f>1000 Hz. These variations of dielectric property result from variation of defects due to doping La as follows: isolated Ba-vacancy ( V″Ba)→ associated defect (LaBa·V″Ba)→(LaBa·V″Ba·LaBa).
STUDIES OF Na ADSORBED ORDERLY AND DISORDERLY ON Si(111) SURFACE USING PES
Authors: ZHANG XUN-SHENG  , FAN CAO-YANG  , SUI HUA  , BAO SHI-NING  , XU YA-BO  , XU SHI-HONG  , PAN HAI-BIN  , XU PENG-SHOU  ,   (1)浙江大学物理系硅材料国家重点实验室,杭州310027; (2)中国科学技术大学国家同步辐射实验室,合肥230029
Published: November 2020

The photoemission spectra with a sychrotron radiation of (3×1) Na adsorbed orderly and disor-derly on Si(lll)-7×7 surface are analyzed and compared with the spectra of clean Si(lll)-7×7 surface. Na atoms are not simply adsorbed on the adatoms or rest atoms. The formation of the Schot-tky barrier is decided by the interaction between Na and Si atoms and seem to bear no relation to the surface structure. The Schottky barrier height(SBH) from experimental data is agreement with the value estimated by MIGS theory.
QUANTAL CANONICAL SYMMETRY FOR A SYSTEM WITH SINGULAR HIGHER-ORDER LAGRANGIAN IN FIELD THEORIES
Authors: LI ZI-PING  ,   北京工业大学应用物理系,北京100022;中国高等科学技术中心(世界实验室)协联成员
Published: November 2020

An algorithm to construct the generator of gauge transformation for a system with singular higher-order Lagranian in field theories is given. Starting from generating functional of Green function in phase space, the Ward identities in canonical formalism for the constrained Hamiltonian system are deduced. It is pointed out that the quantal canonical equation for such a system deffers from the classical canonical equation, arising from the fact that Dirac conjecture is valid. The quantization for a generalized dynamical system which can be equivalent to Chern-Simons theory is given. With preliminary application of canonical Ward identities to such a system, some relationships among the vertices and propagators for the fields can be deduced without carrying out the integration for canonical momenta in phase space path integral.
EMISSION SPECTRA OF TWO ATOMS INTERACTING WITH TWO MODES OF THE CAVITY FIELD THROUGH RAMAN PROCESS (g1≠g2)
Authors: FENG JIAN  , SONG TONG-QIANG  , WANG WEN-ZHENG  , XU JING-ZHI  ,   (1)山东省聊城师范学院光通信研究所,聊城252059; (2)山东省聊城师范学院物理系,聊城252059
Published: November 2020

Emission spectra of a pair of effective two-level atoms interacting with two modes of the cavity field through Raman interaction are studied, where the interaction of each atom with the field may be different. The spectra with two modes of the cavity field being initially in various number states are analysed in detail. It is found that emission spectra manifest following new properties: When mode 1 of the cavity field is in vacuum state and the other is in the weak field , the spectrum shows symmetric ten peaks and six peaks alternately, with the increase of R=g2/g1, which reflects the different Raman interacting intensities of two atoms with the cavity field more sensitively compared with the spectrum of two atoms in a single-mode cavity. The spectrum with 01=1, n2=50 and n1 = 50, n2=1 reflects the different positions of mode 1 and mode 2 of cavity field interacting with two atoms through Raman process. Finally, the symmetric 16-peaks structure of the spectrum is explained.
EFFICIENCY ENHANCEMENT OF FAR INFRARED FREE ELECTRON LASER BY USING A REVERSE TAPERING WAVEGUIDE
Authors: HU SU-XING  , FU EN-SHENG  , XU ZHI-ZHAN  ,   中国科学院上海光学精密机械研究所,上海201800
Published: November 2020

In the high efficiency and small signal region, we investigate theoretically the efficiency enhancement mechanism of far infrared free electron laser (FIR-FEL) with a reverse tapering waveguide. The numerical simulatiion with single particle model suggests that this kind of waveguide whose gap is gradually narrow along z axis substantially heightens the FIR-FEL efficiency.
THEORETICAL ANALYSIS FOR Ho LASER THRESHOLD
Authors: ZHU JIAN  , ZHANG GUANG-YIN  , CHEN XIAO-BO  ,   南开大学物理系,天津300071
Published: November 2020

In this paper, a threshold model for an end pumped Ho3+ laser is developed by using quasi-three-level laser model. The relations between threshold and design parameters are analyzed. A general principle for design low threshold Ho3+ laser is given. The results are also valid for other quasi-three-level laser systems.
CONCERTED MOTION OF Ge ADATOMS ON THE MODERATE TEMPERATURE PHASE OF THE Ge(111) SURFACE
Authors: GAI ZHENG  , HE YI  , YANG WEI-SHENG  ,   北京大学物理系人工微结构和介观物理国家重点实验室,北京100871
Published: November 2020

In the present paper the moderate temperature (MT) phase of the Ge(111) surface, which was obtained by quenching the Ge(111) sample from about 300 1C to room temperature, has been studied by means of ultra-high-vacuum scanning tunneling microscopy (STM) . It has been found that in addition to diffusion of individual Ge adatoms, the most prominent feature of the MT phase is the concerted motion of Ge adatoms along the walls of the 2×2 domains. The moving adatoms may form either open strings or closed loops. Such concerted motion of Ge adatoms on the Ge(111) surface was predicted previously and has been of much theoretical interests, recently. However, this is the first experimental observation of such motion. Our study shows that the motion is not a result of STM tip interference and that it is always along the directions. On the basis of our STM observations as well as the results of the recent theoretical works some discussions on the characteristics of the concerted motion are given.
FERMION-SPIN APPROACH TO STUDY A DOPED ANTIFERROMAGNET
Authors: XU XIN  , SONG YUN  , FENG SHI-PING  ,   (1)北京师范大学物理系,北京100875; (2)北京师范大学物理系,北京100875;中国科学院物理研究所国家超导实验室,北京100080
Published: November 2020

Within the mean-field approximation, we discuss effects of the projection operator in the fermion-spin theory. The ground-state kinetic energy of the t-J model is studied, and the results show that the mean-field ground-state kinetic energy is consistent with the numerical results. The possible phase separation is also discussed.
THE LMTO METHOD STUDY OF ELECTRONIC STRUCTURE AND MAGNETISM OF NdFe10Mo2 COMPOUNDS WITH ThMn12 TYPE STRUCTURE
Authors: QI SHOU-REN  , HUANG XIAO-DONG  , ZHANG YAN  , HUANG XIN-TANG  , CAN ZHONG-WEI  , XIANG RONG  ,   华中师范大学物理系,武汉430070
Published: November 2020

In this paper, LMTO method is described briefly. We applied it to calculate the electronic structure of NdFe10Mo2 with interstitial N atom which is related to the tetragonal ThMn12 structure. From the variation of density of states we can obtained the magnetic moment. The function about variation of magnetic moment after nitration is discussed and campared with calculated local magnetic moment. In NdFe10Mo2 compounds with interstitial N atom, the 8j site has its minimal magnetic moment.
AZIMUTHALLY ANISOTROPIC EMISSION OF UNSTABLE LIGHT NUCLEI IN NUCLEUS-NUCLEUS COLLISIONS
Authors: HE ZHI-YONG  , LI ZU-YU  , JIN GEN-MING  , DUAN LI-MIN  , DAI GUANG-XI  , WU HE-YU  , ZHANG BAO-GUO  , WEN WAN-XIN  , QI YU-JIN  , LUO QING-ZHEN  ,   中国科学院近代物理研究所
Published: November 2020

The in-plane and out-of-plane emission of unstable light nuclei was measured in the reaction of ４０Ａｒ＋１９７Ａｕ at energy 25MeV/u by means of extensive particle-particle correlation. An in-plane enhancement is observed for mid-rapidity unstable light nuclei, indicating a rotational effect exists in this reaction system. This in-plane enhanced emission becomes stronger with increasing of impact parameter, but becomes a little weaker with increasiong of energy of the excited state.
THE ELEMENTARY MICROSTRUCTURES OF THREE-DIMENSIONAL SCATTERING OBJECT INFORMATION RECORDED IN HOLOGRAMS
Authors: XU LEI  , ZHANG ZHAO-QUN  ,   华中理工大学图像技术开发公司
Published: November 2020

Hologram is analysed from a new point of view ——the microstructures of elementary hologram. The elementary analysis theory is developped to decompose the information of thrww-dimensional scattering object recorded in hologram to that of a elementary point of the object. The mocrocoding patterns of the object information under typical recording conditions are discussed.
HEAT CAPACITY OF ThO2
Authors: PENG SHI-AN  ,   苏州铁道师范学院物理系
Published: November 2020

The heat capacity Ｃpof ThO2 can be calculated as the phonon part of Ｃp for other actinide dioxides used as fuel in nuclear reactors. Precise determination of the phonon part of Ｃp of actinide dioxides is helpful to find out the contributions of other factores to Ｃp. In this paper we have, through studying the heat capacity of ThO2, developed a general method applicable to the study of Ｃp of other solids. In the developed method the three type-different experimental measurements made on a solid-heat capacity, thermal expansion and Debye-Waller factor-can be brought together for comparison. The application of this method to the study of Ｃp of ThO2 has enabled us to propose a better description of Ｃp of ThO2 than the generally accepted expression.
THE CLASSICAL ANALOGY OF UNCERTAINTY RELATION
Authors: HUANG XIANG-YOU  ,   北京大学物理系,北京100871
Published: November 2020

The relation analogous to the uncertainty relation of quantum mechanics also exists in classical mechanics. In this paper by using this relation we calculate several examples. From the results of the calculations it is obvious that a wave function can only describe the ensemble in the classical limit.
THE PARITY PROPERTY AND THE STARK EFFECT FOR THE ELECTRON-DIRAC DYON
Authors: QI YONG-CHANG  ,   太原工业大学应用物理系,太原030024
Published: November 2020

It is discussed that the parity conservation is not true when q≠0, i.e., the magnetic charge g≠0 for the electron-Dirac dyon bound system, so that the transitions are not forbiden when △j = 0 and the linear Stark effect may occur. The splitting of this effect is calculated. The features different from hydrogen-like atoms are also briefly discussed.
QUANTUM THEORY OF FEMTO-SECOND SOLITONS PROPAGATING IN FIBERS
Authors: WEN YANG-JING  , YANG XIANG-LIN  , ZHANG MING-DE  ,   东南大学电子工程系,南京210096
Published: November 2020

The micro-Hamiltonian of optical fiber soliton system is obtained, and quantum nonlinear Schrodinger equation (QNSE) with corrections of femto-second soliton propagating in single-mode fiber is derived using the Hamiltonian and dispersion relation. The derived equation is solved with Hartrec approximation. The quantum feature of soliton and classical transition arc studied. Several results are obtained: The mean value of the field in fiber is the average of a set of classical solitons with corrections; as the propagation distance increases, the phase spreads and the soliton becomes self-squeezed, and the result of self-squeezing is relative to higher-terms.
THE STRAIN DEPENDENCE OF THE TRANSPORT CURRENT CHARACTERISTICS IN Bi-2223 SILVER CLAMPED THICK FILM
Authors: WANG ZHI-HE  ,   中国科学院等离子体物理研究所,合肥230031
Published: November 2020

The dependences of stress on strain, strain on the critical current density, and the relation of Jc(H) at several strains were measured in Bi-2223 silver clamped thick film. The results indicate that the stress-strain curve exists two strain transitions which are respectively correspond to the beginning and ending of breaking in Bi1.8Pb0.4Sr2Ca2Cu3Oy thick film. At △X/X≤2.5 % , the critical crrrent density Jc decreases slowly with △X/X increasing. At △X/X≥2.5 % , Jc decreases rapidly with △X/X increasing. As strain increases,the characteristics of Jc(H) decrease rapidly and the weak link junctions emerges obviously. The mi-crostructures show that the decrease of Jc and the variance of characteristics of Jc (H) relate to the breaking of intergrains and grains in the thick film.
STRUCTURAL AND MAGNETIC PROPERTIES OF [Pd/Co-Nb/Pd/Si] MULTILAYERED FILMS
Authors: YAN SHI-SHEN  , LIU YI-HUA  , CHEN JING-GENG  , MEI LIANG-MO  , HUANG JIE  ,   (1)山东大学实验中心,济南250100; (2)山东大学物理系,济南250100
Published: November 2020

Two series of [Pd/Co-Nb/Pd/Si] multilayer films were prepared by rf sputtering. The measurements of structure and magnetism were made by X-ray diffraction and magnetometer, respectively. As the thickness of Pd layers increases, the structure of Pd layers transfers from an amorphous state to a polycrystalline state. The polycrystalline state of the Pd layers shows two adjacent Pd fcc(111) peaks, which originate from the differences of lattice-mismatching degree and polarization of Pd atoms between the interfaces of Co-Nb layers and Pd layers and the interfaces of Pd layers and Si layers. As the thickness of Pd layers increases, the saturation magnetization monotonously increases from a value which is smaller than that of the bulk Co-Nb alloy with the same compositions to another value which is larger, then takes a constant value. This is contributed to the effects of polarization of Pd layers, dimension of Co-Nb magnetic layers and interdiffusion of atoms in the interfaces. The amorphous Co-Nb layers can influence the polarization of Pd atoms in the range of 2.5nm from the interfaces of Co-Nb layers and Pd layers. The is related to the strong interdiffusion of atoms in the interfaces and the large change of the Pd lattice constant in the film normal.
THEORETICAL STUDY OF SPECTRA OF 3-2 TRANSITION AND ITS SATELLITE LINES FOR Ne-LIKE ION OF La
Authors: DONG CHEN-ZHONG  , ZHOU XIAO-XIN  ,   西北师范大学物理系,兰州730070
Published: November 2020

Based on the calculated wavelengths and transition probabilities of n-3 to n-2 transitions for Ne-like, Na-like, Mg-like and Al-like ions of La, in the case of high temperature condition and local thermodynamic equilibrium approximation, we simulated the spectral structure of all the charged states by considering the broadening of individual line and overlapping of a large number of lines in plasma, presented the mean wavelengths and half width of the satellite peaks, interpreted the previous experimental spectral structures, and predicted some new satellite peaks in a larger wavelength region.
SIZE DISTRIBUTION AND SPECIFIC INTERNAL SURFACE OF NANOCRYSTALS PRODUCED FROM ANNEALED AMORPHOUS ALLOY Al88Ce2Ni9Fe1
Authors: MENG ZHAO-FU  , WANG QUN  , SONG GUANG-SHENG  ,   (1)哈尔滨工业大学分析测试中心,哈尔滨150006; (2)吉林大学材料科学系,长春130061
Published: November 2020

The small -angle X-ray scattering method was used to study the properties of nanocrystals produced from annealing the newly developed high-strength, high-toughness amorphous alloy Al88Ce2Ni9Fe1. The distribution of the nanocrystal size and the changes in specific internal surface were studied in a series of experiments. Information on the gyration radius , Porod radius, integration invariance, distribution of nanocrystal size, crystallity and the changes in specific internal surface are obtained.
BRILLOUIN SCATTERING IN LBO CRYSTAL AND MEASUREMENT OF ITS ELASTIC AND PIEZOELECTRIC CONSTANTS
Authors: WANG YUE  , JIANG YI-JIAN  , ZENG LING-ZHI  , LIU YU-LONG  , PANG YU-ZHANG  , ZHU KE  ,   (1)北京工业大学应用物理系,北京100022; (2)中国科学院物理研究所,北京100080
Published: November 2020

The Brillouin scattering tensers and the stiffening Christoffel equations in (100), (010), and (001) planes of C2v point group crystals are obtained at arbitery wave vector directions. Based on these results, all the independent elastic and piezoelectric constants of LBO crystals are determined by means of Brillouin scattering , and the sound velocity anisotropic curves in the three planes are also shown
ENERGY-POOLING COLLISIONS FOR Na(3P) +Cs(6P) HETERONUCLEAR SYSTEM
Authors: SHEN YI-FAN  , LI WAN-XING  ,   新疆大学物理系,乌鲁木齐830046
Published: November 2020

Two different atomic species-sodium and cesium-have been resonantly excited in a cell by a cw dye laser and a cesium lamp, respectively. The density of the excited Na(3P) atoms in the cell is measured directly using the absorption-equivalent-width technique on the lines of the diffuse series. To isolate the heteronuclear contribution in the fluorescence spectrum, a modulation detection technique has been adopted. The energy-pooling collisions between Na(3P) and Cs(6P) have been observed and cross sections have been measured.
INTRINSIC DEFECTS IN ZnO VARISTOR CERAMICS
Authors: FU GANG  , CHEN ZHI-XIONG  , SHI BIN  ,   广州师范学院物理系,广州510400
Published: November 2020

The relationship between dielectric loss factor D (tanδ) and frequency for ZnO-Sb2O3-BaO and ZnO-Bi2O3-Sb2O3-BaO varistor ceramics has been investigated. A new dielectric loss peak was found near by 2MHz at room temperature for the sample in the absence of Bi2O3, the corresponding electron trapping level was about 0.18 eV, it was considered that the loss peak resulted from intrinsicdefect Zni . It was assumed that the formation of intrinsic defect Zni was restricted by ion Bi, it was consistent with experimental fact that the degradation properties of varistor ceramics under the long duration load voltage are improved with the increasing amount of Bi2O3.
STUDY ON THE RAMAN SPECTRUM OF Ce-DOPED Y-Ba-Cu-O SYSTEM
Authors: XU CUN-YI  , SHI LEI  , ZUO JIAN  , PANG WEN-HUA  , ZHANG YU-HENG  ,   中国科学技术大学结构分析开放研究实验室,合肥230026
Published: November 2020

The phase formation of the samples with the norminal composition (Y1-xCex)Ba2Cu3O7-δ(x = 0,0.05,0.1, 0.3, 0.55,1.0)has been studied by Raman spectroscopy. It is found that the impurity phases of BaCeO3 and BaCuO2 have been formed with Ce doping, besides the orthorhombic Y-123 phase. The results suggest that Ce element may not substitute for Y element to form a Ce-123 phase. Moreover, Ce element formed an impurity phase BaCeO3 with Ba.
SELECTION OF INITIAL PERTURBATION WAVELENGTHOF A PLANAR SOLID-LIQUID INTERFACE
Authors: DING GUO-LU  , LIN XIN  , HUANG WEI-DONG  , ZHOU YAO-HE  ,   西北工业大学凝固技术国家重点实验室
Published: November 2020

A transparent model alloy, succinonitrile-0.93wt.% salol is unidirectionally solidified under the accurately controled experimental conditions to investigate the selection of initial perturbation wavelength of a planar interface. The experimental data are compared with the Mullins-Sekerka (M-S) theory and the Warren-Langer (W-L) model. The following results are obtained: (1) Some experimental points do not lie within the wavelength range predicted by the M-S theory when Vcmsecms, where Ve is the pulling velocity, Vcms is the critical instability velocity of a planar interface given by M-S theory. When Ve》1.57Vcms, the experimental points are all within the wavelength range, but several times larger than the wavelength with the fastest amplitude developing speed predicted by the M-S theory. In short, the M-S theory cannot be used effectively to predict the selection of the initial perturbation wavelength of a planar interface. (2) The experimental results obtained in different alloys are all in good agreement with the W-L model, which proves that the initial perturbation of a planar interface is generated by the dramatic amplification of the ambient thermal micro-fluctuation with a characteristic wavelength.
ANALYSIS OF THE TIME SERIES ON THE VALUE SUBFIELD OF CHAOTIC SIGNALS
Authors: YUAN JIAN  , XIAO XIAN-CI  ,   电子科技大学电子工程系
Published: November 2020

Generally,dynamical analysis is just for the time series on the whole of value field.The time series on a value subfield is a subseries of the one on the whole of value field,and appears to be sampled nonuniformly in time.In this paper,by using the method of fuzzy delay coordinate reconstruction,we study the correlation dimensions,the largest Lyapunov exponents and the prediction of the time series on the value subfield of Kent-map. It is shown that the subseries behaves like some other chaotic time series,and the smaller the value subfield is, the larger the correlation dimensions and the largest the Lyapunov exponents are,and thus the poorer the characterization of prediction is.
ON DIELECTRIC RELATION OF DISPERSIVE FLUID
Authors: JIANG YI-MIN  ,   中国原子能科学研究院
Published: November 2020

We show that in macroscopic derivation of nonlocal material relation for a moving fluid,the involved local rest frame should be rotated with the fluid together.To determine the- relationship between the local rest and laboratory frames,outside the velocity,there will appear- three space angles in the set of state variables for the fluid.They satisfy three general equations.Although this work is given for a simple model of relaxation time,the provided approaches- are general,and applicable for obtaining more complicated material relations with dispersion and nonlinearity,which are invariant under the Lorentz transformation.
ELECTRONIC SPECTRA OF THE VICSEK FRACTAL
Authors: WANG LI-MIN  ,   河北师范大学物理系;北京师范大学物理系低能核物理研究所
Published: November 2020

The electronic spectra for the Vicsek fractal at any stage have been discussed using the tight-binding method with the nearest-neighbor interaction approximation. The calculated results have shown the relationship between the persistent modes from one stage to the next. The particularity of the spectra for the fifth stage of Vicsek fractal obtained by numerical calculation was analyzed.
STABILIZATION OF CHAOS OR SUPPRESSION OF CHAOS IN A DISCONTINUOUS CIRCLE MAP
Authors: HE DA REN  , WU SHUN GUANG  , QU SHI XIAN  , MAO XIANG YU  ,   (1)西安石油学院基础课部; (2)西北大学物理系; (3)扬州大学师范学院物理系; (4)扬州大学师范学院物理系;西北大学物理系;中国科学院理论物理研究所
Published: November 2020

With a model relaxation oscillator and its corresponding discontinuous map,we show that the covering effect of the transient set can produce three kinds of regions:(1) stable chaotic region where all the possible periodic windows are erased,therefore chaotic trajectories are structurally stable;(2) complete phase locking region where chaos is suppressed,only periodic motion is permitted;(3) quasiperiodic region where chaos is suppressed,only quasiperiodic motion or periodic motion with marginal stability is allowed.These ideas are then used to explain the observed stable chaotic regions and the complete phase locking regions in a practical electronic relaxation oscillator.
DIFFUSION AND DIELECTRIC SPECTROSCOPY OF SPACE CHARGES IN INSULATING LIQUIDS
Authors: LI JING-DE  , DENG RE-ZHONG  , CHEN MIN  , ZHENG FENG  ,   中山大学物理系
Published: November 2020

The diffusion theory shows that the displacement of space charges leads to a slow polarization effect;the response time is proportional to the square of the distance between the electrodes.The theoretical results are confirmed in experiments.A method of differential time domain spectroscopy is used to study the existence and movement of space charges in C6H6 and CH3 (CH2)n CH3.There are one fast component and two slow components in these compounds.Their response times and strength give information about the molecular length and motion at various temperatures.This differential dielectric spectroscopy in the time domain is a very sensitive method for trace analysis of inpurities in highly insulating liquids.
A METHOD OF CALCULATING EXTINCTION FACTOR IN MOSIAC CRYSTAL
Authors: YI XIANG-DONG  , ZHOU YUN-SONG  , ZHANG TIAN-LI  , CHEN JIN-CHANG  ,   首都师范大学物理系
Published: November 2020

A universal method of calculating extinction factor is developed,which is to introduce a primary extinction factor into the secondary extinction method based on the exact solutions of Darwin transfer equations.As an example,the extinction factors of large LiF are calculated and discussed.The average error factor R is lesser than that got by the method which don't inclued primary extinction.
INTERFACIAL REACTION OF Ti AND MULLITE-CERAMIC SUBSTRATE
Authors: YUE RUI-FENG  , WANG YOU-XIANG  , CHEN CHUN-HUA  , XU CHUAN-XIANG  ,   (1)西安交通大学电气绝缘研究所; (2)中国科学院表面物理国家重点实验室;西安交通大学电气绝缘研究所; (3)中国科学院表面物理国家重点实验室;中国科学院半导体研究所
Published: November 2020

A 200nm Ti film was deposited on a polished mullite ceramic substrate at 200℃ by electron beam evaporation,and annealed under high vacuum conditions.Secondary ion mass spectrometry (SIMS),Auger electron spectroscopy (AES) and X-ray diffraction measurement (XRD) were employed to probe the solid interfacial reaction between Ti and mullite from 200—650℃ for the first time.The results show that the first deposited Ti atoms have formed Ti—O bond with O on mullite surface during the deposition,and trace elemental Al and Si atoms have been segregated,but interfacial range is very narrow.It was broadened a little after the sample annealed at 450℃ for an hour.Interfacial reaction happened violently when the annealing temperature was 650℃ for an hour,and the sample mainly consisted of four laminated structures which in turn were TiO+Ti,Ti3Al,Ti3Al+TiSi2 and mullite ceramic substrate.
GREEN/BLUE LIGHT EMISSION AND LUMINESCENT-MECHANISM OF NANOCRYSTALLINE SILICON-EMBEDDED IN SILICON OXIDE THIN FILM
Authors: ZHU MEI-FANG  , CHEN GUO  , XU HUAI-ZHE  , HAN YI-QIN  , XIE KAN  , LIU ZHEN-XIANG  , TANG YONG  , CHEN PEI-YI  ,   (1)清华大学微电子学研究所; (2)中国科学技术大学研究生院物理部半导体超晶格国家重点实验室; (3)中国科学院物理研究所
Published: November 2020

Green/blue light emission with peak position around 2.3—2.4eV at room temperature was observed from Si nanocrystals embedded in silicon oxide films. The effects of thermal annealing on the structure, silicon core level and photoluminescence of silicon oxide films with nanostructures were studied. PL spectra consisted of peaks of 1.86 and 2.38eV, which were independent of annealing temperature Ta. Silicon and SiO2 phases were separated in the annealing temperature range. Both PL intensity and the amount of Si4+ increased repidly as Ta>750℃. From our observation, the origin of green/blue light emission is suggested to be related to the defects at the interface and in the SiOx network.
ODD-EVEN AL TERNATION IN ALUMINUM ANION CLUSTERS: MASS ABUNDANCE SPECTRA OBSERVATION AND THE MECHANISMS
Authors: ZHAI HUA-JIN  , NI GUO-QUAN  , ZHOU RU-FANG  , WANG YU-ZHU  ,   中国科学院上海光学精密机械研究所;中国科学院量子光学开放研究实验室
Published: November 2020

A pronounced odd-even alternation for Al－n clusters ranging from n=5 to n=17 has been observed in mass abundance spectra. The electron-pairing effect of the delocalized valence electrons determines intrinsically the alternation, while special source conditions enhance the alternation so dramaticaly that it is readily obseervable in mass abundance spectra. The ion group Al7O－ has also, for the first time as far as we know, been observed, and its geometric as well as electronic structure has been discussed.
COHERENT LIGHT AMPLIFICATION IN PHOTOREFRACTIVE CRYSTALS WITH A LOCAL RESPONSE
Authors: GUO RU  , LIU SI-MIN  , LING ZHEN-FANG  , ZHANG GUANG-YIN  ,   南开大学物理系
Published: November 2020

It is shown theoretically and experimentally that a weak signal light amplification is possible in thin photorefractive crystals with a local nonlinear response due to photovoltaic charge transport.The origin of the power exchange is that four wave interaction of the input beams and reflection beam at the rear will form two sets of bending gratings with certain spatial phase shift.When the grating written by the reflection wave and its diffracted wave is read by the input pump beam under off Bragg condition ,the weak signal beam achieves coherent amplification.Theoretical and experimental results are compared with each other.
DIFFERENCES BETWEEN THE INTERFACES OF InGaAs/GaAs AND GaAs/InGaAs IN SUPERLATTICES
Authors: WANG XIAO-JUN  , JIN XING  , ZHANG ZI-PING  , ZHENG LIAN-XI  , XIAO ZHI-BO  , HU XIONG-WEI  , WANG QI-MING  ,   (1)中国科学院半导体研究所国家光电子工艺中心; (2)中国科学院半导体研究所集成光电子学国家重点实验室; (3)中国科学院北京电子显微镜实验室
Published: November 2020

The InyGa1-y As/GaAs superlattice with an InxGa1-x As (xyGA1-yAs interface was narrower than that at the InyGa1-y As/GaAs interface; in InyGa1-yAs alloy layer, the composition near the GaAs/InyGa1-y As interface was larger than that near the other interface. For the first time, we have explained the composition profile in these kinds of superlattices based on the indium segregation theory. In addition, a new strain relaxation model was presented to explain the differences in the smoothness between the two interfaces.
MAGNETORESISTANCE,COERCIVITY AND STABILITY FOR THE SPIN VALVE [NiFe/Cu/Co/Cu] MULTILAYERS
Authors: FANG RUI-YI  , YU YING-LEI  , CHEN TING-YONG  , DAI DAO-SHENG  ,   北京大学物理系
Published: November 2020

The spin valve [NiFe/Cu/Co/Cu]N multilayers were prepared by using electr on bean method. The influences of thickness on the magnetoresistance (MR) werestudied. We also investigated the stability of MR and tried to reduce the center field H0, which is the center magnetic field of the linear region in the MRH curve. Under optimum seeking conditions, we have deposited many samples with low center field H0 in range of (10—20)(103/4π)Am-1,the merit is larger than 0.2%×((103/4π)Am-1)-1. The variation of MR in the linear region in the MRH curve is reversible during repeatedly magnetizing. After annealed at 200℃ for 15 minutes, MR increased and Hrm reduced with a small amount. The change of MR is less than 0.3% for several samples after aging one year in the dry air chamber and room temperature.
MAGNETIC FIELD GRADUALLY INCREASING WIGGLER
Authors: HUANG YU  , WANG MING-CHANG  , WANG ZHI-JIANG  , J.K.LEE  ,   (1)Department of Physics,Pohang Institute of Science and Technology,Pohang 790-600; (2)中国科学院上海光学精密机械研究所
Published: November 2020

FEL efficiency improvement with magnetic field increasing wiggler has been- investigated.-Numerical simulation with KMR equations considering space charge effect we find that FEL power increase greatly.It is interested that the larger the energy spread is,the greater the FEL power increasement is.Therefore the-whole electron beam of the accelerator can be used for FEL and higher power can be gotten with magnetic field increasing wiggler.
A NON EQUILIBRIUM MEAN FIELD THEORY ABOUT THERMALLY INDUCED FIRST ORDER PHASE TRANSITION
Authors: LIU JUN-MIN  , ZHANG JIN-XIU  ,   中山大学物理系
Published: November 2020

In order to investigate the non-equilibrium features in first order phase transition driven by a linear temperature field, the equilibrium free energy of the phase transition system was modified with an additional term, which is related to dη/dT or dη/dt. On the basis of the numerical solutions, the asymmetrical hysteresis behavior has been discussed.
REMOTE MEASUREMENT OF PIEZOEFFECT
Authors: LI GENG-YING  , PAN TAO  , XIA XIAO-JIAN  ,   (1)华东师范大学分析测试中心; (2)苏州铁道师范学院物理系
Published: November 2020

A new method,which involves measurement of the piezoelectricity by nuclear quadrupole resonance spectrometer,is proposed.The spectral intensity of a quartz crystal versus the strength of the excitation pulse,the pulse width and the resonance offset is studied in detail.The experimental results demonstrate that the piezoelectric resonance signal originating from samples located tens of centimeter away from the probe may be detected in a time scale of seconds.This technique provides potential for more extensive investigation and application of the piezoelectric materials.
STUDY OF CARBON MONOXIDE ON Cs-PRECOVERED-Ru(101-0) SURFACE
Authors: LI HAI-YANG  , BAO SHI-NING  , ZHANG XUN-SHENG  , FAN ZHAO-YANG  , XU YA-BO  ,   浙江大学物理系;中国科学院表面物理国家重点实验室
Published: November 2020

CO+Cs/Ru(101-0) system has been investigated using HREELS. Two molecular adsorption states of CO were found. One with higher C—O frequency was similar to that on clean Ru(101-0) surface, while the other with lower C—O frequency appears on a Cs-precovered Ru(101-0) surface. Two states of CO were occupied sequentially during the exposure to CO. The frequencies of both two loss peaks shift to higher values with exposure to CO and to lower values with higher Cs precoverage.
RAMAN SPECTRO-ANALYSES OF DIAMOND-FILMS DEPOSITED ON ALUMINA CERAMICS
Authors: MO YAO-WU  , XIA YI-BEN  , HUANG XIAO-QIN  , JU JIAN-HUA  , WANG HONG  ,   上海大学材料科学与工程学院
Published: November 2020

Diamond films were alternatively deposited on alumina ceramic wafers by microwave plasma chemical vapor deposition (MPCVD) and hot-filament chemical vapor deposition (MPCVD).The qualities of the deposited diamond films deposited on different wafers with different deposited techniques were appraised by the method of fitting the spectra, and the domain size and strain of the films were calculated.The results of calculation were consistence with that derived from the X-ray diffraction analyses.
SPONTANEOUS EMISSION AND DECOHERENCE IN QUANTUM COMPUTER MEMORY CELL
Authors: ZHANG DENG-YU  ,   湖南衡阳师范高等专科学校物理系;中国科学院安徽光学精密机械研究所激光光谱学开放研究实验室
Published: November 2020

One of the main difficulties of quantum computation is that decoherence destroys the information in a quantum computer memory cell.On the basis of Rzazewski′s work,we have studied the effect of spontaneous emission on the memory cell when each memory cell is taken to be two-level atom.
STRONG COUPLING POLARON WITHIN POLAR CRYSTAL SLAB IN A MAGNETIC FIELD
Authors: HUANG ZHUO-HE  , CHEN CHUAN-YU  , LIANG SHI-DONG  ,   广州师范学院物理系
Published: November 2020

The strong coupling polaron in a slab of polar crystal in magnetic field is investigated by means of the extended the strong coupling variational theory of polaron. The energy and the effective mass of polaron are derived as functions of slab thickness and magnetic field. The numerical results of Cu2O slab show that the influence of magnetic field reduces the energy of polaron and enhances the energy shift of electron, and that the surface optical modes are important to polaronic effect in a thin slab and in the presence of magnetic field.
BOUNDARY CONDITIONS AND THE STABILITY OF ONE-DIMENSIONAL CONDUCTING POLYMERS
Authors: WEI JIAN-HUA  , XIE SHI-JIE  , MEI LIANG-MO  ,   山东大学物理系
Published: November 2020

The stabilities of one-dimensional conducting polymer chains with finte lengths have been studied in the frame work of the SSH tight-binding model.Three kinds of boundary conditions have been proposed to stabilize the dimerized structure of the chains.It was found that the natural boundary condition or the end-fixed boundary condition is applicable for getting a result to fit the observed photo-absorption of polyacetylene with short (N<20) lengths.
THE STUDY OF THE ELECTRONIC STRUCTURE OF ZnSe(100) POLAR SURFACE
Authors: BAN DA-YAN  , FANG RONG-CHUAN  , LI YONG-PING  , ZHANG HAI-FENG  ,   (1)冶金工业部钢铁研究总院; (2)中国科学技术大学物理系
Published: November 2020

By using the Linear Muffin-Tin Orbital (LMTO) method and synchrotron radiation photoemission,the electronic structure and surface stability of ZnSe(100) nonreconstruction surface,c(2×2) undimerized and c(2×2) dimerized reconstruction surfaces have been theoretically and- experimentally investigated.We find that ZnSe(100)c(2×2) undimerized surfaces is more stable than ZnSe(100) nonreconstruction surface and c(2×2) dimerized reconstruction surfaces, supporting the experimental results proposed by Farrell.Through discussing surface states,we have found the- difference between ZnSe(100) reconstruction surface and c(2×2) undimerized surface. The theoretical result is in good agreement with the synchrotron radiation photoemission measurements.
THE EFFECTS OF INTERVALLEY INTERACTIONS ON THE ELECTRONIC STRUCTURES IN QUANTUM WELLS Ge0.3Si0.7/Si/Ge0.3Si0.7 GROWN ON Ge0.3Si0.7(001)
Authors: XU ZHI ZHONG  ,   复旦大学物理系
Published: November 2020

Using the generalized k·p method based on empirical pseudopotential theory associated with boundary conditions of current density operator,the electronic bound levels are calculated for quantum wells Ge0.3Si0.7/Si/Ge0.3Si0.7 grown on Ge0.3Si0.7(001).The energy level splitting by intervalley interactions is studied in detail and the dispersions of electronic bound levels in the well plane are also discussed.
SUBSTITUTION OF OXYGEN IN YBaCuO BY CHLOR INE
Authors: CUI YONG-JIE  , XIE CHONG-WEI  , YANG XIAO-YUN  ,   (1)云南大学物理系; (2)云南省分析测试研究所
Published: November 2020

Oxygen in YBaCuO superconductor was partly substituted by Cl- in the forms of CuCl2 and BaCl2．There sults show superconductive phase can be obtained no matter CuCl2 or BaCl2 was used. Cl- coming from CuCl2 ccupies O2 site of 123 phase, while Cl- coming from BaCl2 enters O4 site. The former effects superconductivity dramaticaly and the electrical conductivity of normal state changes from metallic behaviour to semiconductive behaviour. The latter reduces Tc，but Tc keeps larger than 77K and the electrical conductivity of normal state still remains metallic behaviour. All these suggest that the oxygen on the CuO plane (O2) plays an important role in the high Tc superconductivity.
PROPERTIES OF GaS GROWN BY MICROWAVE-GLOW DISCHARGE
Authors: CHEN XI-YING  , CAO XIAN-AN  , DING XUN-MIN  , HOU XIAO-YUAN  , CHEN LIANG-YAO  , ZHAO GUO-QING  ,   (1)复旦大学半导体物理实验室; (2)复旦大学物理二系; (3)复旦大学应用表面物理国家重点实验室
Published: November 2020

A novel passivation film on GaAs surface has been grown by microwave sulfur glow discharge technique.Auger electron spectroscopy and Rutherford back scattering measurements show that the film is mainly composed of sulfur and gallium,and atomic ratio of gallium to sulfur is about 1∶1.From X-ray diffraction spectroscopy measurememt,GaS is identified to be hexagonal polycrystalline material.The refraction index and dielectric constant of GaS have also been determined.
DEVELOPMENT STUDY OF (e,2e) ELECTRON MOMENTUM SPECTROMETER AND MEASUREMENT OF ELECTRON-MOMENTUM SPECTRUM OF SEVERAL ATOMS AND MOLECULARS
Authors: YANG BING-XIN  , CHENG XIAN-JUN  , PANG WEN-NING  , CHENG MIAO-HUA  , ZHANG FANG  , TIAN BAO-LI  , XU KE-ZUN  ,   中国科学技术大学近代物理系
Published: November 2020

A versatile (e,2e) spectrometer has been successfully developed.The electron beam impacts with the gas beam at right cross. The position sensitive detector with micro-channel plate multipliers and resistive anodes have been developed.An on-line multi-parameter data acquisition technique and off-line data analysis are used.The distributions of separation energies and momentum profiles of Ar,He atoms and H2,CH4 moleculars have measured.
ELECTRONIC STRUCTRUE AND GEOMETRY OF Na3
Authors: ZHANG PEI-HONG  , YANG JIN-LONG  , LIU LEI  , LI JIA-MING  ,   (1)复旦大学物理系三束材料改性国家重点实验室; (2)中国科学技术大学基础物理中心; (3)中国科学院物理研究所
Published: November 2020

In this paper,the ground state potential surface of Na3 is calculated by employing the discrete variational method.The calculated ground state equilibriun geometry,vibrational frequencies,Jahn-Teller stability energy and Jahn-Teller localization energy are in good agreement with the experimental data.
A NEW METHOD OF NEUTRON MONOCHROMATIZATION
Authors: ZHOU YUN-SONG  , RAN JING-HUI  , CHEN JIN-CHANG  , YI XIANG-DONG  ,   (1)首都师范大学物理系; (2)中国原子能研究院
Published: November 2020

In this paper, an improvement of neutron monochromatization by laminating three slab crystals for a monochromator, was put forward and the corresponding calculating method was given. In order to show the merit of the new method, we have calculated PG, Ge and Si and compared the results. We believed the new method was as effective as the double crystal method and the new one was less complicated.
INVESTIGATION OF Na/Si(111)3×1 SURFACE STRUCTURE USING NEXAFS
Authors: FAN CHAO-YANG  , ZHANG XUN-SHENG  , TANG JING-CHANG  , SUI HUA  , XU YA-BO  , XU SHI-HONG  , PAN HAI-BIN  , XU PENG-SHOU  ,   (1)浙江大学物理系硅材料国家重点实验室; (2)中国科学技术大学国家同步辐射实验室
Published: November 2020

The investigation of the near-edge X-ray absorption fine structure(NEXAFS) of Na-induced Si(111)3×1 surface structure using the secondary electron partial yield method with synchrotron radiation is reported. Comparing the possible absorption models by the multiple-scattering cluster method, we find that the calculated results by using the Mnch model agree with the experiments.The sodium atom is absorbed on the top site with Na—Si bond length 0.3 nm.
NITRIDATION OF K/GaAs(100) SURFACES
Authors: HU HAI-TIAN  , LAI BING  , YUAN ZE-LIANG  , DING XUN-MIN  , HOU XIAO-YUAN  ,   复旦大学应用表面物理国家重点实验室，上海  200433
Published: November 2020

Presence of a K adlayer will promote nitridation of GaAs(100) surfaces at room temperature, as is evidenced by photoemission measurements. Following exposure of K/GaAs to pure nitrogen, there appear remarkable variations in both valence band and core level spectra, i.e., recovery of work function to a certain extent, emergence of the N2p peak in the valence band spectra and creation of chemically shifted Ga2p and As2p components in the core level spectra. For the three different K coverages we studied (1/4, 1/2 and 1ML), the 1ML one shows the strongest promotion effect.
AN IMPROVED MODEL OF COUPLE CALCULATION OF ION CYCLOTRON WAVE HEATING
Authors: ZHU XUE-GUANG  , KUANG GUANG-LI  , ZHAO YAN-PING  , LI YOU-YI  , XIE JI-KANG  ,   中国科学院等离子体物理研究所，合肥  230031
Published: November 2020

The electromagnetic field distribution of ion cyclotron wave in tokamak geometry is discussed in detail in this paper.As for the problem that conventional antenna coupling slab model gives larger error to the calculation of large aperture antenna,an improved model is presented that can upgrade the calculation precision greatly.The theoretically computed results are in good agreement with the experimental observation.
AMORPHIZATION REACTION PROCESS IN Ni/AMORPHOUS Si MULTILAYER
Authors: WANG WEI-HUA  , BAI HAI-YANG  , WANG WEN-KUI  ,   (1)中国科学院低温实验技术中心，北京  100080; (2)中国科学院物理研究所，北京  100080
Published: November 2020

Solid state amorphization reaction process in Ni/amorphous Si multilayers has been quanlitatively studied by using in situ X-ray diffraction. An amorphous formation and growth model is suggested for elucidating the solid state reaction in the Ni/amorphous Si multilayers. Thermodynamic and kinetic interpretations for the amorphization reaction at grain boundaries in Ni sublayers are presented.
ABSORPTION SPECTRA AND UPCONVERSION OF ZnWO4∶Sm3+ CRYSTAL
Authors: ZANG JING-CUN  , LIU YAN-HANG  , CAO JIE  , LIU YU-LONG  , ZHANG HAO  ,   (1)北京工业大学化学与环境工程系，北京  100022; (2)中国科学院物理研究所，北京  100080
Published: November 2020

The ZnWO4∶Sm3+ single crystal (Sm2O3=0.1wt%) has been grown by the Czochraiski technique. Absorption spectra were measured. The up-conversions at 448,471,505 and 533nm were observed by exciting with a He-Ne laser at 632.8nm wavelength, using a laser Raman spectrometer.
QUANTUM FLUCTUATIONS IN MESOSCOPIC CAPACITANCE COUPLED CIRCUITS
Authors: WANG JI-SUO  , HAN BAO-CUN  , SUN CHANG-YONG  ,   聊城师范学院物理系，聊城  252059
Published: November 2020

Starting from the equation for the classical motion of a nondissipative mesoscopic capacitance coupled circuits with source,we have studied the quantum fluctuations of the charge and current in the eigenstate of the coupled circuits and in the squeezed vacuum state,respectively.The results show that the quantum fluctuations in the two circuits are correlated with each other.
CONDUCTION-BAND OFFSET IN PSEUDOMORPHIC GaAs/In0.2Ga0.8As QUANTUM WELL DETERMINED BY C-V PROFILING AND DLTS TECHNIQUES
Authors: LU LI-WU  , ZHANG YAN-HUA  , YANG GUO-WEN  , WANG ZHAN-GUO  , J.WANG  , Y.WANG  , WEIKUN GE  ,   (1)国家光电子工程中心，中国科学院半导体研究所，北京  100083; (2)香港科技大学物理系，香港九龙; (3)中国科学院半导体研究所半导体材料科学开放研究实验室，北京  100083
Published: November 2020

The conduction-band offset ΔEc has been determined for molecular beam epitaxy (MBE) grown GaAs/In0.2Ga0.8As single quantum well structure,by measuring the capacitance-voltage profiling, while taking into account a correction for the interface charge density, and the capacitance transient resulting from thermal emission of carrier from the quantum well, respectively.We found that ΔEc=0.227eV,corresponding to about 89% ΔEg,from the C-V profiling; and ΔEc=0.229eV, corresponding to about 89.9% ΔEg, from the deep level transient spectroscopy (DLTS) technique. The results suggest that the conduction-band discontinuity ΔEc obtained from the C-V profiling is in good agreement with that obtained from the DLTS technique.
HAUSDORFF DIMENSION AND SCALING NATURE OF ANISOTROPY DIFFUSION DLA CLUSTER
Authors: TIAN JU-PING  , YAO KAI-LUN  ,   (1)华中理工大学物理系，武汉  430074;江汉石油学院基础科学系，荆州  434102; (2)华中理工大学物理系，武汉  430074;中国科学院国际材料物理中心，沈阳  110015；中国高等科学技术中心(世界实验室)，北京  100080
Published: November 2020

In this paper,the effect of the anisotropy diffusion on the growth of diffusion-limited aggregation(DLA) clusters is discussed.Our computer simulation results verify that DLA clusters grown with anisotropic diffusion rules have a striking overall diamond shape.A new anisotropic diffusion equation of particles is derived.The Hausdorff dimension of a two-dimensional DLA cluster in the anisotropic diffusion is calculated.The results show that the effective angle βeff=min(βix,βiy).In addition,the generalized dimension Dq of the anisotropic diffusion DLA is also discussed and an expression of the generalized dimension Dq is obtained using the modified wedge model.
HIGH-ORDER HARMONICS FROM TWO-LEVEL ATOMS IN LASER FIELD WITH LOW-FREQUENCY
Authors: QU WEI-XING  , YU WEI  , HU SU-XING  , XU ZHI-ZHAN  ,   中国科学院上海光学精密机械研究所强光光学开放研究实验室，上海  201800
Published: November 2020

This paper derives the equation of motion followed by the induced polarization of the two-level atoms subject to the laser field with frequency much lower than that of the transition between the levels.With the approximate solution to the equation of motion under the conditions of the weak external field and of the ultra-intense one,we obtain the characteristics of the corresponding high-order harmonics from the two-level atoms.
QUANTUM DYNAMICS OF A CASCADE THREE-LEVEL ATOM INTERACTING WITH COHERENT STATE IN THE COUNTER ROTATING WAVE APPROXIMATION
Authors: LIU SAN-QIU  , GUO QIN  , TAO XIANG-YANG  , FU CHUAN-HONG  ,   江西师范大学物理系，南昌  330027
Published: November 2020

The dynamics of a cascade three-level atom interacting with the single mode coherent state under the Counter-Rotating-Wave approximation (C-RWA) is investigated.The properties of the mean-photon number (N(t)) and the degree of second-order coherence (g2(t)) are analyzed in this model.The little indentation which represents the quantum noise of the system appears in the evolution curves of the mean-photon number and the degree of second-order coherence under the C-RWA.The quantum noise which is caused by the virtual photon field gradually becomes weak when ω increases.The quantum noise increases when increases.The anti-bunching effect of the system under the C-RWA is stronger than the one under the RWA.Besides,the relation of N(t) and g2(t) with the atom-field coupling constant λ is revealed in our results.
EFFECTIVE OPTICAL CONSTANTS OF COATINGS WITH PARTICLES
Authors: XU WEN-LAN  ,   中国科学院上海技术物理研究所红外物理国家重点实验室，上海  200083
Published: November 2020

A new method to calculate the effective optical constants of the coatings with particles is presented. Considering the light absorption and scattering of the sphere, cylinder, and sheet shaped particles in the coatings, we obtain the apparent reflectivity of the coatings. Let this reflectivity equal to the reflectivity of other suppositional homogeneous coating, the effective optical constants of the coating with particles are calculated.
THE DISCUSSION ON MOMENTUM CONSERVATION OF GLR EQUATIONS
Authors: HE BO  , ZHU WEI  , XU ZAI-XIN  ,   (1)华东师范大学物理系，上海  200062; (2)上海交通大学闵行分部应用物理系，上海  200240
Published: November 2020

The GLR equations are the basic equations describing the phenomena in the small x region.Especially it is important to use them for analysing the deep-inelastic lepton-proton scattering and EMC effect.But GLR equations have the defect that they violate the law of conservation of momentum.We discuss this problem and point out the defect in analysing the experiment.
STRUCTURAL CHARACTERIZATION AND INTRINSIC MAGNETIC PROPERTIES OF THE R3 (Fe,Mo)29 NITRIDES
Authors: PAN HONG-GE  , WANG XIN-HUA  , HAN XIU-FENG  , YANG FU-MING  , CHEN CHANG-PIN  ,   (1)浙江大学材料科学与工程学系，杭州  310027; (2)浙江大学材料科学与工程学系，杭州  310027;中国科学院物理研究所磁学国家重点实验室，北京  100080; (3)中国科学院物理研究所磁学国家重点实验室，北京  100080
Published: November 2020

The structural characterization and intrinsic magnetic properties of the R3(Fe,Mo)29(R=Ce,Nd, Sm, Gd, Tb,Dy and Y) nitrides have been investigated in great detail, including the lattice parameters, Curie temperature TC, saturation magnetization σs and anisotropy field Ba.