bluuebunny/crossref_metadata_2025 huggingface dataset:
INVESTIGATION OF 3d TRANSITION METALS BY IONIZATION LOSS SPECTROSCOPY
Authors: ZHANG QIANG-JI  , CHEN NAI-QUN  , HUA ZHONG-YI  ,   复旦大学现代物理研究所,上海,200433;中国科学院北京真空物理开放研究实验室,北京,100080
Published: November 2020

A simple method has been developed in our laboratory, namely, lonization Loss Spectros-copy (ILS) for unoccupied DOS measurement which can be performed with existing Auger electron spectroscopy apparatus.The results of spin-orbit splitting and binding energy obtained by ILS are in excellent agreement with that of ESCA. The ILS spectra of 3d transition metals, Ti, Cr, Ni, Cu have been measured. The typical integral spectra exhibit a peak-like shape with different intensity and width which reflects the width of the unoccupied DOS. Since the unoccupied 3d DOS of Cu is zero, the ILS spectrum of Cu measured is shown by a step-like structure resulting from the flat, narrow 4s DOS.
FERROMAGNETIC RESONANCE STUDY IN FeCrB AMORPHOUS ALLOYS
Authors: HE ZHENG-MING  , LIANG REN-YOU  , HOU BI-HUI  , XU YUN-HUA  , LU GUO-RONG  , LUO YOU-QUAN  ,   (1)中国科学技术大学结构分析中心,合肥,230026; (2)中国科学技术大学物理系,合肥,230026
Published: November 2020

Ferromagnetic Resonance spectra of (Fe1-xCrx)84B16 amorphous alloys and the change of spectra with temperature have been observed in the temperature range 106 K to 430 K. The FMR spectra are multipeak. The variation of line width △H with T has been discussed. This is an experimental verification of "independent grain approximation".
SU(2) AND GLAUBER COHERENT STATES OF COOPER PAIRS IN SUPERCONDUCTOR——STUDIES OF THE QUANTUM CHARACTERS OF COOPER PAIRS AND JOSEPHSON SUPERFLUIDITY
Authors: HUANG HONG-BIN  ,   东南大学物理系,南京,210018
Published: November 2020

It is shown, using the quasi-spin operator, that the BCS superconducting ground-state wave function is the direct product of single Cooper-pair SU(2) coherent state wave functions, and in certain conditions, is SU(2) coherent state wave function of the Cooper-pair system. If two superconductors, both in BCS ground state, are coupled together, the coupled system is also in SU(2) coherent state. Under the contraction of group SU(2) to harmonic-oscillator group, the SU(2) coherent states contract to Glauber coherent states. The quantum fluctuations, distributions, and second correlations of Cooper pairs and Josephson superfluidity in the two cases are discussed.
INVESTIGATION OF THE FINE STRUCTURE OF BORON'S Kα X-RAY SPECTRUM
Authors: ZHU SHI-YAO  , XU JI-HUA  , ZHAO SHU-JUN  , LI XING  ,   中国科学技术大学近代物理系,合肥,230026
Published: November 2020

The fine structure of boron's Kα X-ray spectrum was investigated by means of a soft X-Ray Curved Crystal Spectrometer with high resolution. The Fourier selfdeconvolution technique, with a new type of dynamic-apodization function, was used to resolve intrinsically overlapped bands, increasing the resolving power and keeping good ratio of signal to noise. The results show the evidence of boron's (in B2O3) Kα X-ray spectrum fine structure with two peaks, at wavelength 67.657? and 67.536? respectively, which verify the theory of sp2 hybrid orbit of boron.
INFLUENCE OF HYDROGEN ON MAGNETIC PROPERTIES OF SOFT MAGNETIC AMORPHOUS ALLOYS
Authors: HE KAI-YUAN  , CHEN WEN-ZHI  , GUI RONG-LI  ,   (1)东北工学院材料科学系,沈阳,110006; (2)东北工学院材料科学系,沈阳,110006;钢铁研究总院,北京,100081; (3)钢铁研究总院,北京,100081
Published: November 2020

The influence of electrolytic hydrogenation on the magnetic properties of three kinds of soft magnetic amorphous alloys with diffrent composition has been investigated. The experimental results showed that, after hydrogenation, the samples became very brittle and the soft magnetic properties of these alloys were seriously damaged, but the saturation magnetization and the average hyperfine field Hhf increased remakably. The experiments also showed that the hydrogen escaped gradually from the samples when they were left in air at room temperature and the magnetic and mechanical properties as well as the Hhf could recover gradually.
A KINETIC ANALYSIS OF THE DEPOSITION MASS DISTRI-BUTION IN AN AXIAL-FLOW RF PCVD REACTOR
Authors: LIU DA-MING  , LIU ZU-LI  , YAO KAI-LUN  , LI ZAI-GUANG  ,   (1)华中理工大学激光国家重点实验室,武汉,430074; (2)华中理工大学物理系,华中理工大学激光国家重点实验室,武汉,430074; (3)华中理工大学物理系,武汉,430074; (4)华中理工大学物理系,武汉,430074;中国高等科学技术中心(世界实验室),北京,100080
Published: November 2020

On the basis of the diagnostics about the axial distribution of plasma electron temperature and electron density in an axial flow RF PCVD reactor by using electrical probe, a model for two-dimension fluid kinetics concerned with major PCVD parameters is proposed. A kinetic analysis about how deposition profiles are influenced by major PCVD parameters is presented by means of the analysis of plasma parameters. The model has been applied to study the deposition process of SnO2 films obtained from a gases mixture of SnCl4 and O2. The theoretical calculation are in good agreement with the experiments of deposition.
MODIFICATION OF MICROSTRUCTURE AND PROPERTIES OF ION PLATED TITANIUM NITRIDE FILM BY ADDING YTTRIUM
Authors: LIU CHANO-QING  , WU WEI-TAO  , JIN ZHU-JING  ,   中国科学院金属腐蚀与防护研究所腐蚀科学开放研究实验室,沈阳,110015
Published: November 2020

The microstructure and properties of ion plated titanium nitride film can be improved by adding rare earth element yttrium. Y-modified titanium nitride (Ti(Y)N) film exhibits an excellent corrosion resistance and binding strength to the substrate of A3 steel. The microstructure characteristics of Ti(Y)N/A3 system have been investigated by X-ray diffraction, ion probe mass analysis and cross section transmission electron microscopy. The results show that yttrium is enriched at the interface of Ti(Y)N/A3 system and the modification of Y at the interface leads to a very good metallurgical transition band from the substrate to the film and the preferential orientation along close-packed TiN(lll) crystal plane, which may be the major reasons for the improvement of the properties of the Ti(Y)N film.
A SPIN-ONE QUENCHED BOND RANDOMLY DILUTED IS1NG MODEL ON A HONEYCOMB LATTICE
Authors: WANG ZHEN-LIN  , GAO ZHAN  , LI ZHEN-YA  ,   (1)江南大学基础部,无锡,214063; (2)苏州大学物理系,苏州,215006
Published: November 2020

A new decoration method is proposed which can achieve an exact mapping between the quenched bond randomly diluted spin-1 Ising model on a regular lattice in the subspace: exp(K)cosh (J) =1 and a certain class of mixed-spin quenched site randomly diluted decorated-lattice problem. Using this mapping in conjunction with the annealed model solution for the decorated-lattice problem, we have obtained the approximate results for the quenched bond randomly diluted spin-1 Ising model on the honeycomb lattice. The critical temperature and the magnetization of the diluted system as functions of bond concentration are calculated in detail.
CALCULATION OF ORDERED PARAMETERES IN LI2 STRUCTURE BY MONTE-CARLO METHOD
Authors: ZHAO XIANG-RONG  , ZHU JING  ,   钢铁研究总院,北京,100081
Published: November 2020

The calculation of order parameteres with variant temperature in Ll2 structure has been carried out in this work by means of Monte Carlo method statistical physics. The order interaction of the nearest neighbour J1 and three kinds of order interaction of next neares' neighbour J2= 0, - 0.3J1 as well as 0.3J1 were considered in this calculation. The results show that the calculation value of the critical temperature Tc (order-disorder transition temperature) of the first order phase transformation is in good agreement with that obtained by some other theories, such as quasi-chemical method; and Tc is sensitively affected by J2, that may be regarded as an interpretation about the action of interstitial atoms in Ll2 structure.
THEORY OF ABOVE THRESHOLD IONIZATION PHENOMENA IN INTENSE LASER FIELDS
Authors: TONG XIAO-MIN  , LI JIA-MING  ,   中国科学院物理研究所,北京,100080
Published: November 2020

Here we present a unified theory of above threshold ionization (ATI) phenomena. Based on this theory, we can describe ATI processes in realistic atomic screen potentials and can also elucidate experimental observations of ATI phenomena. The ATI phenomena mainly involve two successive procosses: (1) Quantum transition processe from an initial field-free state to final strong laser field dressed states. (2) in order to descibe experimental observations, one must consider post-interactions between the escaping photoelectron and the strong laser fields, which are classic processes owing to ponderomotive forces generated by non-uniform laser fields.
CONDITION OF GENERATING PHOTON NUMBER STATE IN OPTICAL CAVITY
Authors: LIU ZHENG-DONG  ,   江西师范大学物理系,南昌,330027
Published: November 2020

This paper studies the cavity field generated by injecting atoms, one at a time, initially in the excited state and operating at a one-step two-photon transition. The interesting features of photon statistical distribution in the cavity are found and discussed, the conditions of generating photon number state are shown.
BISTABILITY IN A TWO-PHOTON LASER WITH INJECTED SIGNAL
Authors: WANG YING-HAI  , HU CHENG-SHENG  , WANG ZHI-CHENG  ,   兰州大学物理系,兰州,730001
Published: November 2020

By means of the semiclassical method, we discuss the bistability in a two-photon laser with injected signal for the homogeneously broadened single mode ring cavity. It is demonstrated that in the resonant case one can find bistable states in a two-photon laser with injected signal. In the limit of "good cavity" and "bad cavity", we give a simple description of bistability leading to a predictions for the transient behavior of the output light and the hysteresis cycle by adiabatically eliminating the fast variables. It is found that the approach to the stationary state is monotonic in the low-branch and is oscillatory in the high-branch, and a critical slowing down occurs where the output field changes discontinuousiy.
SELF-FOCUSING AND HARMONIC EMISSION EFFECT INDU-CED BY TEN-MICRON-SMALL-SCALE LASER SPOT IN PLASMAS
Authors: LIN ZUN-QI  , HE XING-FA  , ZHANG HUI-HUANG  , WANG XIAO-QIN  , ZHUANG YI-FEI  , LIN KANG-CHUN  , ZHAO ZHI-WEN  , WEI XIAO-CHUN  , SHI A-YING  , TIAN LI  , DAI MEI-LAN  , SHEN XIAO-HUA  , LI JIA-MING  ,   (1)中国科学院上海光学精密机械研究所,上海,201800; (2)中国科学院物理研究所,北京,100080
Published: November 2020

We present in this paper the temporally and spatially resolved feature of the side scattered 3ω0/2 harmonic emission, induced by A single laser spot with ten-micron-radius-scale in a preformed laser plasma. The close relation of the harmonic emission with such a small scale laser self-focusing filamentation has been discussed in detail. It is suggested that the side scattered harmonic signal from a underdense region as low as 0.05nc may be caused by the Lang-muir wave and/or ion-acoustic wave scattering induced by laser dynamic filamentation.
THEORY OF DEGENERATE AND NEARLY DEGENERATE FOUR-WAVE MIXING IN PLASMAS——IN THE CASE OF TRANSMISSION GRATING CONFIGURATION
Authors: WU YING  ,   华中理工大学物理系,武汉,430074
Published: November 2020

In this paper, the theory of degenerate and nearly degenerate four wave mixing in plasmas in transmission geometry is investigated. The universal set of four wave nonlinear coupled equations is obtained and its exact solution is found. The theoy can be helpful in developing various high speed nonlinear optical devices in the range of microwave frequencies.
THE EXACT SOLUTION AND BERRY'S PHASE FOR THE GENERALIZED TIME-DEPENDENT HARMONIC OSCILLATOR
Authors: GAO XIAO-CHUN  , XU JIN-BO  , QIAN TIE-ZHENG  ,   浙江大学物理系,杭州,310027
Published: November 2020

In this paper, we find the exact solution for the generalized time-dependent harmonic oscillator by making use of the Lewis-Riesenfeld theory. Then, the adiabatic asymptotic limit of the exact solution is discussed and the Berry's phase factor for the oscillator obtained. We proceed to use the exact solution to construct the coherent state and calculate the corresponding classical Hannay angle.
DYNAMIC AND STEADY-STATE VISCOSITY OF THE META-LLIC GLASS Ni30Zr70
Authors: ZHENG FU-QIAN  ,   贵金属研究所,昆阴,650221
Published: November 2020

The dynamic viscosity and the steady-state viscosity are measured for the metallic glass Ni30Zr70. The dynamic viscosity increases linearly with the decrease of the heating rate as a result of the structural relaxation, and the temperature dependence of the dynamic viscosity can be described by the Arrhenius equation in the temperature range below Tg. The temperature dependence of the steady-state viscosity satisfies the Fulcher-Vogel equation at temperatures below Tg. From the high temperature at temperature of the onset of crystallization dynamic viscosity values with four heating rates, the equilibrium viscosity is determined. Over the temperature range of 63C to 670K, the temperature dependence of the equilibrium viscosity is well described by the Fulcher-Vogel equation.
XPS AND AES STUDY FOR Au/a-Si:H INTERFACE
Authors: ZHONG ZHAN-TIAN  , WANG DA-WEN  , LIAO XIAN-BO  , FAN YUE  , LI CHENG-FANG  , MOU SHAN-MING  ,   (1)清华大学无线电电子学系; (2)中国科学院半导体研究所,北京,100083; (3)中国科学院表面物理实验室,北京,100080
Published: November 2020

The Au/a-Si:H contact has been investigated by XPS and AES. It is found that the metal cluster occurs, at initial formation process of Au/a-Si:H interface, and after exceeding the critical Au deposition value, the Vinterdiffusion and chemical reaction of Au and Si begin and Au-Si intermixing region is formed. Furthermore, the experimental results of photoemission study confirm that Si islands are formed after annealing the interface of Au/a-Si:H.
A RESEARCH OF THE CORRELATION BETWEEN SURFACE TOPOGRAPHY AND ANGULAR DISTRIBUTION OF SPUTTERED ATOMS
Authors: WANG ZHEN-XIA  , PAN JI-SHENG  , TAO ZHEN-LAN  , ZHANG JI-PING  , ZHANG HUI-MING  , ZHANG WEI-PING  , LU ZHAO-LUN  ,   (1)杭州大学物理系,杭州,310028; (2)中国科学院上海原子核研究所,上海,201800
Published: November 2020

The angular distributions of sputtered atoms of cadmium have been measured with 27 keV Ar+ ion bombardment at normal incidence with different target temperature by using collector technique and RBS analysis. After the sputtering experiment the surface structures have been observed using scanning electron microscope. For all samples the angular distributions are over-cosine. However, the values of the deviation △ from the cosine distribution at the axis of polar angle of 0°is not all the same. The deviation △T at the target temperature of 150℃ △R is smaller than that at room teperature. ie. △TR. A simple model is proposed to explain the formation of pattern of angular distribution.
A KIND OF q-DEFORMED OSCILLATORS AND THEIR NON-BOSONIC EXCITATIONS WHEN qk=1
Authors: YAN HONG  , CHEN WEI  , CHANG ZHE  , GUO HAN-YING  ,   (1)中国高等科学技术中心世界实验室; (2)中国科学院理论物理研究所,北京,100080
Published: November 2020

The q-oscillator is studied in the case of q being roots of unity, and SUq(2) and SUq(1, 1), the algebras realized through the oscillators are indicated. The excitations are found to be non-bosonic and the classical mechanical counterparts are given. Especially when rank k is 4 and 6, the excitations are shown to be fermi and parafermi like respectively. Short comment upon [6] is given to show that parts of the results therein are trivial.
THE JUMP STOCHASTICITY CHARACTERISTICS OF NONLI-NER FUNCTION IN THE DYNAMIC SYSTEM
Authors: XU YUN  , ZHANG JIAN-XIA  , DU SHI-PEI  ,   贵州工学院电气系,贵阳,550003
Published: November 2020

The results of both the computer and laboratory experiment show that the nonliner function in the dynamic system bears a special property, that of jump stochasticity. This special property makes the nonliner function to produce a number of jump stochasticity curves which are different from that of itself.
CLASSICAL q-DEFORMED HARMONIC OSCILLATORS AND THEIR ? QUANTIZATION
Authors: CHEN WEI  , CHANG ZHE  , GUO HAN-YING  ,   (1)中国高等科学技术中心世界实验室; (2)中国科学院理论物理研究所,北京,100080
Published: November 2020

We point out that the usual quantum enveloping algebra can be realized at classical level in the sense of Poisson bracket. As an example, we give the classical realization of Uq(SU(2)) by a system of classical harmonic oscillators. We show that the q-deformation corresponds to Beltrami deformation of the complex coordinate of phase space, ? quantization of the system of the classical deformed oscillators is also discussed, Uq(SU(2)) algebra in Lie bracket obtained.
INFLUENCE OF FEEDBACK STRENGTH ON THE OSCILLA-TION PATTERN IN OPTICAL SYSTEM WITH COMPETING INTERACTIONS
Authors: DAI JIAN-HUA  , ZHANG HONG-JUN  ,   中国科学院物理研究所,北京,100080
Published: November 2020

In this paper, we report the influence of feedback strength on the oscillation pattern in optical system with competing interactions. The frequency locking, frequency jump between neighboring modes and the hysteresis phenomenon are observed. Our computation and experimental results verify that the feedback strength is the competing interaction source.
A ROTATIONAL ANALYSIS OF UV MULTIPHOTON IONIZATION SPECTRUM OF SiH4
Authors: LU QING-ZHENG  , DING CHUAN-FAN  , GAO JIAN-MI  , KONG FAN-AO  ,   (1)中国科学技术大学近代化学系,合肥,230026; (2)中国科学技术大学近代化学系,合肥,230026;中国科学院化学研究所,北京,100080
Published: November 2020

Fine structrue of the band at 363.52 nm in multiphoton ionization spectrum of SiH4 has. been observed using dye laser with 6×10-4nm scanning step. In the case of three-photon resonant excitation, SiH4 is treated as a a symmetric top. Most rotational lines have been resolved and acounted for as a Q-branch of v2 perpendicular band, and B＇= 3.04±0.01 cm-1 is thus obtained.
FEATURES OF EVOLUTION FOR STATISTICAL DISTRIBU-TION OF PHOTON IN TWO-PHOTON JAYNES-CUMMINGS MODEL
Authors: HE LIN-SHENG  , JIANG HAI-HE  ,   中国科学院安徽光学精密机械研究所,合肥,230031
Published: November 2020

The general expression of the statistical distribution function of photons in two-photon Jaynes-Cummings model (JCM) is derived. The expression can be applied to the cases of any initial light field and any initial atomic state. Under exact two-photon resonance, the features of evolution for the statistical distribution of photons in JCM with the initial coherent state field and the initial squeeze state field are studied in detail. These two cases show striking difference.
MULTILEVEL THEORY OF TIME-DELAY FOUR-WAVE MIXING WITH INCOHERENT LIGHT——INHOMO-GENEOUS BROADENING CASE
Authors: ZHANG RUI-HUA  , MI XIN  , ZHOU HAI-TIAN  , JIANG QIAN  , YE PEI-XIAN  ,   中国科学院物理研究所,北京,100080
Published: November 2020

In this paper, our multi-level theory of time-delay four wave mixing with incoherent light (TDFWM-IL) developed previously for the case of homogeneous broadening system has been extended to a generally inhomogeneous broadening case. From the present theory, a general expression of signal intensity for absorption band with both homogeneous and inhomogeneous broadening is given as a function of mutual time delay τ between two pump beams. Photon echo with incoherent light under the condition of extremely inhomogeneous broadening is discussed, and the difference of results obtained scperately from multi-level and two-level theory is pointed out. It has been demonstrated that the experiment of TDFWM-IL can also be analysed approximately by using an effective two-level model when a weak effect of inhomogeneous broadening of absorption band exists. Finally, our experimental results of TDFWM-IL obtained at zero-phonon line of ruby and absorption edge of cresyl violet film in PMMA are also presented and compared with the theory mentioned above.
X-RAY TEMPERATURE AND X-RAY CONVERSION EFFI-CIENCY FOR LASER CYLINDRICAL CAVITY TARGETS
Authors: ZHANG JUN  , PEI WEN-BING  , SUI CHENG-ZHI  , GU PEI-JUN  ,   应用物理与计算数学研究所,北京,100088
Published: November 2020

In this paper, the scaling laws between the X-ray temperature and the X-ray energy converted by laser have been studied analytically for the laser cylindrical cavity targets according to the information of the experiments and the numerical simulations. For a series of experiments made on the Shenguang facility in 1989, we predict that, as the laser energy of each beam is 300-500J, the pulse width is 0.7-1.0ns, and the wavelength is 1.06 μm, the X-ray conversion efficiency is about 50-55% for the two beam targets, and the corresponding X-ray temperature is about 1.5×106-1.7×106K.
RELAXATION PROCESS MEASUREMENTS OF EXCITED STA-TE IN TETRAPHENYL PERPHYRINS BY LASER FREQUENCY DOMAIN TECHNIQUE
Authors: FEI HAO-SHENG  , CHEN XIAO-HUI  , HAN LI  , ZHAO JIA-LONG  ,   (1)吉林大学物理系,长春,130023; (2)吉林大学物理系,长春,130023;沈阳建工学院; (3)吉林大学物理系,长春,130023;中国科学院长春物理研究所
Published: November 2020

The relaxation time of excited state of FeTTP in CHCl3 has been measured by laser frequency domain technique. The relaxation time of the first excited state is obtained to be 0.82 ps by the numerical fitting for the experimental curve.
FORMATION PROCESS OF CHARGE TRANSFER EFFECT IN SILVER SURFACE-MOLECUL SYSTEM
Authors: MIAO RUN-CAI  , FU KE-DE  , LI XIANG  , LIU XI-SHE  , ZHANG CHANG-AN  ,   陕西师范大学物理系,西安,710062
Published: November 2020

The band of charge transfer transition was detected in optical absorbtion spectra when molecule adsorbed on the silver surface in silver sol. The process of charge transfer between molecule and surface was mainly studied and some explanations were given.
EFFECT OF STRAIN ON THE BULK AND THE SURFACE ELECTRONIC STRUCTURES OF (GaP)1/(InP)1(111) SUPERLATTICE
Authors: WANG EN-GE  , ZHANG LI-YUAN  , WANG HUAI-YU  ,   (1)北京大学物理系,北京,100871; (2)中国科学物理研究所,北京;中国科学院国际材料物理中心,沈阳
Published: November 2020

Under the tight-binding formalism, this paper suggests that effect of strain can be considered in terms of Harrison's interatomic matrix elements, taking acount of the homogeneous bond stretching and bond bending in ultrathin layer (GaP)1/(InP)1(lll) systems. Using recursion method, we have calculated the bulk and the surface electronic structures of the stable (GaP)1/(InP)1(lll) superlattice determined by the Keating model. Our result shows that its band gap is 1.88 eV, which is smaller by 0.31 eV than the average of the calculated gaps of bulk GaP(2.91 eV) and lnP(1.48 eV). As compared with the calculated auxiliary systems, we find that the band gaps of the superlattices become larger and the Fermi levels become lower with the increasing of the strain of the bond length. Furthermore, the obtained number of the occupied electrons on different sites clearly shows that InP is more ionic than GaP. Finally, we show the existence of an approxiamte SPz+Px-Py dehybrid on (111) surface of this strained-layer superlattice and point out that the contribution of S or P partial orbital of a (111) surface atom to this dehybrid is different from the case of a (001) surface atom of GaAs/AlAs (001) superlattice.
ENERGETIC CIRCULATING PARTICLE STABILIZING EFFECT ON INTERNAL KINK MODE IN TOKAMAK
Authors: LI ZI-LI  , CHEN YAN-PING  , CAI SHI-DONG  , BIAN BO-DA  ,   (1)福州大学物理系; (2)福州大学物理系,硕士研究生,华中理工大学物理系; (3)中国科学院物理研究所,北京,100080
Published: November 2020

The stability of m = l,n = l internal kink mode in tokamak plasma with anisotropic energetic circulating particle component is analyzed by using the generalized energy principle. The stabilizing effect from the barely circulating particles is proved. The similarity and difference of the stabilizing effect on the internal kink mode from the energetic trapped particles and energetic circulating particles are compared, based on physical picture.
TRANSMISSION SPECTRA OF AN ATOM-CAVITY
Authors: TAN WEI-HAN  , LIU REN-HONG  ,   中国科学院上海光学精密机械研究所,上海,201800
Published: November 2020

A model is presented for the transmission spectra calculation of an atom-cavity. The three peaks structure of the spectra obtained can be regarded as the result of vacuum Rabi oscillation.
SMALL-ANGLE X-RAY DIFFRACTION ANALYSIS OF GexSi1-x/Si SUPERLATTICE
Authors: ZHOU GUO-LIANG  , SHEN XIAO-LIANG  , SHENG CHI  , JIANG WEI-DONG  , YU MING-REN  ,   (1)复旦大学表面物理实验室,上海,200433; (2)复旦大学分析测试中心
Published: November 2020

The GexSi1-x/Si superlattice with 23 periods was grown by molecular beam epitaxy. The X-ray diffraction pattern was measured using a computer-controlled X-ray diffractometer with Cu Ka radiation. Interference peaks due to the superlattice structure were observed up to the 13th order. The superlattice period and the Ge average composition can be determined from the interference peak angles based on a modified Bragg's law, which was derived by including the X-ray refraction at the superlattice surface and interfaces. The structural parameter can be determined by analyzing the X-ray diffraction pattern based on the optical multilayer reflection theory. The intensity ratio of the 2nd peak to the 1st peak is quite sensitive to the variation of the thickness ratio of the two components. By comparing the calculated value of I2/I1 to the experiment, we can determine the thicknesses of Si and GexSi1-x layers, and finallv x. The diffraction pattern calculated using the optical mutilayer reflection theory was in accordance with the measured ones.
EFFECTS OF ELECTRON IRRADIATION ON LOSS CHARACTERISTICS OF SINGLE MODE OPTICAL FIBERS DOPED WITH RARE EARTH Er3+
Authors: HU KAI-SHENG  , LI ZONG-XIANG  , NING DING  , LI HAO  , ZHOU JIAN-PING  , LIU QUAN-MIN  ,   (1)机械电子工业部电子材料研究所,天津,300220; (2)天津市技术物理研究所,天津,300192
Published: November 2020

This paper presents the effects of electron irradiation on the characteristics of single mode optical fibers doped with rare earth Er3+. The parameters of optical fibers are measured, prior to irradiation and after irradiation and annealing. It has been found that absorption loss in the wave length range of 0.80-1.60 μm is greatly lager than those of unirradiationed fibers. The irradiation induced loss obeys the following exponential laws: LUV =0.342exp [E(eV)/0.166] in the range of 0.80-1.20 urn and LIR = 2.2×104exp [-6.08E(eV)] in the range of 1.20-1.60 μm range. During annealing, the induced loss at longer wave length decreases, but that near 0.80 μm increases. Finally, the paper discusses the mechanism of loss variations. The displaced probability of oxygen and silicon atoms in electron irradiation is estimated to be 7.1×10-8 and 3.9×l0-8, respectively. The loss induced by displaced atoms is 200 times langer than that induced by the same amount of OH- at 1.40 μm. The process of annealing of the loss essentially occurs in two steps, i.e., by neutralization of the free electron and reforming of the broken bonds.
KINETIC STUDY OF (Ba1-x,Pbx)TiO3 SOLID SOLUTION FORMATION
Authors: HU JIN-YUAN  ,   华中理工大学机械工程二系,武汉,430074
Published: November 2020

Kinetics of (Ba1-xPbx) TiO3 solid solution formation was studied by high-temperature X-ray diffraction. The relations among the concentration of lead and the reaction rate constant K, as well as activation energy Q and the kinetic parameter C are discussed.
INVESTIGATION ON IONIC CONDUCTIVITY AND STRUCTURE OF AMORPHOUS LITHIUM IONIC CONDUCTOR P2O5-0.7Li2O-0.4LiCl-0.1Al2O3
Authors: SU FANG  , XU WEI  , SU JUN  ,   (1)中国科学技术大学基础物理中心,合肥,230026; (2)中国科学技术大学物理系,合肥,230026
Published: November 2020

Ionic conductivity and activation energy of 60 meshpowder, 120 mesh-powder, 200 mesh-powder, tablet pressed with powder and bulk piece of amorphous lithium ionic conductor P2O5-0.7Li2O-0.4LiCl-0.1Al2O3 in the range of 60℃-380℃ were investigated. It is found that decreasing the grain size can enhance ionic conductivity by 4 times and does not affect activation energy, owing to the effect of boundary layer in the same amorphous phase. Research after ionic conductivity measurement and X-ray diffraction of samples heated at 380℃ for 76 hours show that following the grain size becomes smaller, the crystallization process becomes easier. The bulk piece of amorphous sample not only has conductivity two orders higher than that of the tablet sample and lower activation energy, but also is more difficult to crystallize. Hence it possesses higher applicability. Study on DSC, conductivity, XRD and DTA of 60 mesh, 120 mesh, 200 mesh amorphous powder heated at 300℃ for 330 hours and at 350℃ for 612 hours shows that there are more than two amorphous phases and more complex interface effects among different phases in their amorphous phase separation.
MEASUREMENT OF c-AXIS CRITICAL CURRENT DENSITY FOR YBa2Cu3O7-x
Authors: YU ZHENG  , DING SHI-YING  , YAN JIA-LIE  , REN HONG-TAO  ,   (1)北京有色金属研究总院,北京,100088; (2)南京大学物理系,南京,210008
Published: November 2020

Transport critical current density Jc and hysteresis loop at different field-sample orientations were measured for both melt-textured growth (MTG) and sintered YBa2Cu3Oy (YBCO) sample. Very high Jc (78K, 0 Oe) of 3.5×104A/cm2 has been obtained for the MTG YBCO sample. The experimental results show strong evidence of that the high Jc in MTG YBCO results mainly from the significant reduction of weak links because the bulk Jc for MTG sample are almost the same as the intragrain Jc for sintered sample. We also show that the Jc parallel to a-b plane is about an order of magnitude higher than that normal to a-b plane(Jc∥≈10Jc⊥).
DIRECTIONAL GROWTH OF Bi -Sr-Ca-Cu-O2212 PHASE SUPERCONDUCTING SINGLE CRYSTAL
Authors: GU GEN-DA  , CAI WEI-LI  , YANG PEI-FANG  , WANG YU-XIA  , YAO LIAN-ZENG  , HUANG DA-JIN  , RUAN YAO-ZHONG  , ZHOU GUI-EN  , CHENG TING-ZHU  , ZHANG YU-HENG  ,   (1)中国高等科学技术中心(世界实验室); (2)中国科学技术大学材料科学与工程系,合肥,230026; (3)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

Superconducting single crystals of Bi-Sr-Ca-Cu-O 2212 phase have been sucessfully grown by a directional solidification method. The maximum size of single crystal reached 19+3×mm3. The (001) plane of the crystals is parallel to the growth direction. The crystals tend to grow along the [010] direction. Back-reflection Laue pattern revealed that the large crystal is indeed one single crystal. Measurements of electrical resistivity and ac susceptibility showed that Tc(zero) of the single crystals annealed in O2 was 81.5 K.
RESEARCH ABOUT SCREEN-RELIEF MEASURES FOR LiNbO3 SURFACE POTENTIAL
Authors: SONG YU  ,   中国科学院高能物理研究所,北京,100080
Published: November 2020

The strong periodic surface electric strength caused by spontaneous polarization may be used as an undulator instead of Wiggler magnet to produce free electron laser. But the free electrons falling on it screen the potential gradually.Some screen-relif measures are proposed in this paper. Every positive polarized domain on the polarized crystal surface of LiNbO3 is covered with a piece of insulator film and covered further with an earthed conductor film to protect this polarized crystal surface from electric screening by free electrons. It is proved that the sum of induced charges on two surfaces of each part in these conductor films is zero. The free electrons falling on it will escape into the Earth at once.
STUDIES ON THE INTERACTION OF HYDROGEN ATOMS WITH DIAMOND SURFACE
Authors: LUO CHUN-PING  , MENG GE  , QI SHANG-XUE  , LIN ZHANG-DA  ,   中国科学院物理研究所,北京,100080
Published: November 2020

The vibration modes of hydrogen-atom adsorption on the diamond surface were studied with high resolution-electron energy loss spectroscopy. Two main losses were observed at 360 meV and 160 meV. They are assigned to the C-H stretch vibrations and the angle-changing deformation vibrations respectively. Replacing H-atom with D-atom, isotropic shifts were observed in the loss spectra. Heating the diamond surface to 900℃, all of the loss features disappear, but an inelastic continuous loss-structure was observed. Due to H-atom desorp-tion, the dangling-bonds became horizontal bonds on the diamond surface, resulting in the gra-phitization of diamond surface. The appearance of the inelastic continuous loss-structure was the characteristic of graphite π-band. The graphitization of the diamond surface was affirmed further by UPS and AES studies.
STATIC SPACETIMES WITH PLANE-SYMMETRIC SCALAR FIELDS
Authors: Li Jian-zeng  , Liang Can-bin  ,   (1)北京广播学院,北京,100024; (2)北京师范大学,北京,100875
Published: November 2020

The static general solution to Einstein's equations representing a plane-symmetric spaceti-me metric yielded by a massless scalar field is presented. The global properties of the space-time obtained, such as its symmetries and singularities are investigated. It is found that, unlike the spherical case, the singularity in the plane-symmetric case is not influenced essentially by the introduction of the scalar field.
STUDIES ON DELAYED MAXIMA OF PHOTOIONIZATION CROSS SECTIONS FOR 4d→f TRANSITIONS OF Xe ATOMIC IONS
Authors: Tong Xiao-min  ,   中国科学院物理研究所,北京,100080
Published: November 2020

Based on independent electron approximation, we have studied the delayed maxima of photoionization cross section of 4d→f transitions for Xe atomic ions. We illustrate the relations of delayed maxima with the enhancement of corresponding final channel electron collision with the residual atomic ions and relations of secondary delayed maxima with the difference of quantum defects of initial and final states. Our results show: (1) As the degree of ionization increases, the delayed maxima will move towards low energy and finally disappear. (2) for Xe atomic ions, the smaller the absolute value of difference of quantum defects of initial and final states is. the low energy the Cooper minima position is.
EVOLUTION OF SQUEEZED STATE FIELD IN A TWO-PHOTON ABSORPTION MEDIUM
Authors: He Lin-sheng  , Jiang Hai-he  , Liu Shang-qing  , Xia Yu-xing  ,   中国科学院安徽光学精密机械研究所,合肥,230031
Published: November 2020

The exact analytic expressions for the photon statistics distribution, the squeezing degree S and the second order degree of coherence g(2) of light field are obtained by using the master equation for the density operator of light field and applying the generation-function method. The evolution of these quantities with the scale-time τ are discussed. It is shown that the squeezing degree S, which is gradually reduced in two-photon absorption process, may still exhibit the squeezing feature. Moreover, the process is favorable to the existence and the enhancement of photon antibunching effect and photon sub-poissonian statistics feature, but the oscillatory characteristics of photon statistics distribution disappear rapidly after having been preserved in a short time.
LINEAR AND NONLINEAR CALCULATIONS OF THE 3-DIMENSIONAL MOTION OF RELATIVISTIC ELECTRONS IN THE ELECTROMAGNETIC WIGGLER AND AXIAL GUIDE FIELD
Authors: Zhang Shi-chang  , Wang Wen-yao  ,   (1)西南交通大学应用物理系,成都,610031; (2)中国高等科学技术中心(世界实验室)理论物理分中心
Published: November 2020

The 3-D motion of the relativistic electrons is analysed under the combination of a cylindrical waveguide TE mode (or TM mode) and an axial guide field. Both linear and nonlinear calculations are carried out. Generally speaking, the projection of the electron orbits onto the transverse plane is an annulus, the thickness of which is dependent on the amplitude of the electromagnetic wiggler. However, the electron orbits may diverge when ω+kzvzo+ ( m±1 )ωc≈0 Discussion is also given to the special case that the electromagnetic wiggler is a slow wave propagating parallel to the electron motion.
A FAST MAPPING METHOD FOR TOKAMAKS
Authors: Yu Xue-hua  , J. S. De  ,   (1)美国通用原子能技术公司; (2)美国通用原子能技术公司,北京市中关村824楼301号
Published: November 2020

A fast mapping method used to the tokamaks is introduced. It relieves the structure of magnetic island and ergodic on plasma edge. The structure is produced by resonance between radial pertubation field, which is caused by additional coil, and the original tokamak field. The application to TEXT and some results are given.
FORMATION AND ELIMINATION OF LAYER-LIKE FLOSS IN THE FLUX KTiOPO4 CRYSTALS
Authors: XIAO CHAO-LIANG  , LIU YU-JIE  , WANG QI-WEI  , LI WEN-XIU  , XU YAN-PING  , TAN JIN-GE  , JIA SHOU-QIAN  ,   中国科学院物理研究所,北京,100080
Published: November 2020

The surface morphology and interior flaws of KTiOPO4 (KTP) crystals grown in pota-sium polyphosphates flux solution were observed with optical microscopy. The fluctuation pattern of bulk supersaturations across the layer-like floss in the crysrals was obtained with scanning electron microscope and energy spectrum analysis. Based on the above results, the causes and process for the formation of macro inclusion-layer-like floss due to the high in-homogeneity of solute distribution on the grown face under some inappropriate growth conditions were elucidated. The flossless and transparent KTP crystals have been grown rapeatedly when the cocentrations of solution were located in the region of critical bulk supersaturation for steady growth, namely the σ was everywhere larger than the lower limit (～1.3) of the region.
DOPING EFFECTS IN YBa2Cu1-xCox(Cu1-yZny)2Oz SYSTEM
Authors: Xu Zhu-an  , Fang Ming-hu  , Zhao Yong  , Zhang Qi-rui  , Zhang Shi-yong  , Wang Ming-hua  , Cheng Xiang-ai  , Sha Jian  , Hu Su-hui  ,   (1)浙江大学化学系,杭州,310027; (2)浙江大学物理系,杭州,310027; (3)中国科学技术大学物理系,合肥,230026; (4)中国科学院上海冶金研究所,上海,200050
Published: November 2020

The crystal structure, oxygen content, resistance, Hall effect and superconducting crkical temperature of YBa2Cu1-xCox(Cu1-yZny)2Oz system (0≤x, y≤0.1) have been studied. It is found that with increase of Co and Zn contents, the transformation from superconducting metal with orthorhombic structure to non-superconducting semiconductor with tetragonal structure occurs. At the same time, the Tc and the carrier density nh decrease sharply. The effects with Co and Zn doping simultaneously are not simply additive. With increase of Co and Zn concentrations, there is a strong coorelation between Co doping on Cu(l) and Zn on Cu (2) sites. The experimental results show that the coupling between Cu-O planes and Cu-O chains gives much influence on the electronic transport properties in normal states and superconductivity. The characteristics of the hole carriers and its dependence on Tc in 123 phase compounds are also dicussed.
LASER-INDUCED FLUORESCENCE EXCIATION SPECTRUM OF OXALYL CHLORIDE
Authors: LU QING-ZHENG  , CHEN YANG  , TANG SONG-BAI  , MA XING-XIAO  ,   中国科学技术大学近代化学系,合肥,230026
Published: November 2020

Laser-induced fluorescence excitation spectrum of oxalyl cholride (C2O2Cl2) in the rang of 358-372.5nm has been observed. More than 60 vibrational transitions have been assigned, in which 24 bands were not found in absorption spectrum. From the vibrational structure, we obtained some of the vibrational frequencies in ground state and excited state in which v＂7=84cm-1 and v＇7= 164cm-1 are new data. The rotational analysis of high resolved 401 band leads to the rotational constants A = 0.190cm-1, B = 0.114cm-1, and C = 0.048cm-1.
SQUEEZING OF THE SQUARE OF THE FIELD AMPLITUDE IN TWO-PHOTON ABSORPTION PROCESS
Authors: HE LIN-SHENG  ,   中国科学院安徽光学精密机械研究所,合肥,230031
Published: November 2020

From the master equation of the field density for the two-photon process, with the help of the generation function method, the expressions of the squeezing of the square of the field amplitude generated in two-photon absorption process are derived. The variations of the square of the field amplitude with the dimensionless time τ, the phase θ and the average number of photons of the incident field are discussed. It is shown that the two-photon absorption process is an effective way generating the squeezing effect of the square amplitude of the field. Finally, the independence of the amplitude-squared squeezing effect is demonstrated.
ON THE CORRESPONDENCE OF BAND EIGENSTATES OF (GaAs)1(AlAs)1(001) SUPERLATTICE AND Ga0.5Al0.5As ALLOY
Authors: WANG REN-ZHI  , HUANG MEI-CHUN  ,   厦门大学物理系,厦门,361005
Published: November 2020

Based on the LMTO-ASA numerical calculations, we contrast the band eigensrates of the (GaAs)1(AlAs)1(001) superlatrice with those of the zincblende Ga0.5Al0.5As alloy. We find that they can be described unifiedly by the partial-wave states of the III and V group atomic planes. In this scheme, we analyze in more detial the correspondence relations of the band eigenstates of superlattice and zincblende alloy at Γ, M(X), and R(L) points. The effects of the superlattice zone folding on the eigenstates are also discussed.
STUDY OF AlGaAs/GaAs WAVEGUIDE STRUCTURE BY X-RAY DOUBLE CRYSTAL DIFFRACTION
Authors: MAI ZHEN-HONG  , GUI SHU-FAN  , WANG CHAO-YING  , WU LAN-SHENG  ,   中国科学院物理研究所,北京,100080
Published: November 2020

An AlGaAs/GaAs waveguide structure sample was investigated by X-ray double crystal diffraction technique. Based on the X-ray dynamical diffraction theory the reflection intensities of the substrate and the films were calculated. Comparing the calculated results with the experimental ones, the real structure of the sample was obtained. The factors affecting the double crystal diffraction recking curves are discussed.
ANALYSIS OF CORRECTION FACTOR FOR SAMPLES' LENGTHS IN MEASUREMENT OF DC MAGNETIZATION
Authors: YANG YU  , WANG YU-GUI  , XIONG XIAO-ZHONG  , YUAN SONG-LIU  , WANG SHUN-XI  ,   (1)中国科学院等离子体物理研究所,合肥,230031; (2)中国科学院等离子体物理研究所,合肥,230031;1989级研究生; (3)中国科学院等离子体物理研究所,合肥,230031;本所1988级研究生
Published: November 2020

In this paper, we analysed the diamagnetization flux of samples with different lengths by calculating the distribution of the magnetic field produced by magnetization current. A simple and clear correction factor which was determined by the coil size and samples' lengths was obtained. An accurate calculation method for absolute magnetization of samples with small cross section was presented. Through the measurement of the susceptibility on BiPbSrCaCuO superconductors with different lengths, this method is shown to be valid.
THE HAUSDORFF DIMENSION OF DIFFUSION-LIMITED AGGREGATION CLUSTERS WITH ANISOTROPIC DIFFUSION
Authors: FENG YUE-XIN  , FENG CHANG-JING  , LIU SHEN-ZHI  ,   (1)江西电视大学,南昌,330046; (2)江西师范大学计算中心,南昌,330027; (3)江西水利规划设计院,南昌,330029
Published: November 2020

We obtain effective exterion half angle of the anisotropic diffusion DLA clusters β= min {βx, βy} by analytical calculation. The hypothesis of Yu Jiang about β = max{βx,βy} is modified and the formula of Hausdorff dimension D of the anisotropic diffusion DLA clusters varying with the anisotropic diffusion probability p is also modified. We also made simulation tests and find that the modified formula agrees well with experimental results. Finally, we compare our result with the numerical result of Jullien, and find a good coincidence when
THE EFFECT OF DOPING CONCENTRATION ON BAND-GAP NARROWING OF p-TYPE GaAs
Authors: CHENG WEN-QIN  , MEI XIAO-BING  , LIU SHUANC  , LIU YU-LONG  , LI YONG-KANG  , ZHOU JUN-MING  ,   中国科学院物理研究所,北京100080
Published: November 2020

The band-gap narrowing of p-type GaAs as a function of doping concentrafion has been investigated by photoluminescence spectroscopy on samples grown by molecular beam epitaxy on (110) semi-insulating GaAs. It was first found that the band-gap narrowing of p-type GaAs comes from the moving up of valence band, the location of dopant level (band) remains unchanged relative to conduction band, and the ionization energy decreases with the increase of doping concentration.
CHAOTIC DIMENSIONS OF FORCED OREGONATOR OSCILLATOR AND CUBIC MAP
Authors: CHEN ZHI-RONG  , CHEN FEI-WU  , YUAN HUI  , LI XIAO-HUI  , ZHAO LIAN-QING  , NIU WEN-ZHANG  , CHEN BING-XING  , TENG SHU-LAN  ,   (1)西安705研究所,西安710061; (2)西北大学化学系,西安710069
Published: November 2020

In this paper, we prove that forced Oregonator oscillator may be describled by cubic map, for there are three fixed points in four variables differential equations and the transfer function of chaos represents the character of cubic curve. We find the DSP symbolic description of 3-point cycle BK; C, 4-point cycle BK; LC, BK; C, BRK; C and draw a cycle line of BRK; C. We find two of one type in period-doubling bifurcations along a straight line. We studied five chaotic behaviours. Its dimensions are 2.02-2.37. In the middle region of chaos, its dimensions are slightly smaller, i.e., 2.02 to 2.09. Near the 4-point cycle line, its dimensions are 2.16 to 2.34.
EFFECT OF IMPURITIES ON INCOMMENSURATE PHASE TRANSITION OF K2ZnCl4 CRYSTAL
Authors: ZHANG CUN-ZHOU  , ZHANG GUANG-YIN  , YU PING  ,   (1)南开大学物理系,天津300071; (2)天津大学物理系,天津300072
Published: November 2020

The soliton behavior of K2ZnCl4 crystal near commensurate-incommensurate phase transition point is investigated by dielectric measurement. It is found that the dielectric curve deviate from Curie-Weiss law and the dielectric peak value decrease with the increasing of the impurities. The influence of impurities on phase transition point Tch in heating run is larger than phase transition point Tcc in cooling run. This phenomenon is contrary to the case of Rb2ZnCl4 crystal. The linear and nonlinear response of a multisoliton lattice is well described by a Landau-type theory. Analysis shows that the thermal hysteresis is mainly determined by the action of impurities, but this does not imply that the Peierls lattice pinning potential may not play any role in the thermal hysteresis.
PROBLEM OF STABILITY OF THE EQUILIBRIUM HELICAL ORBIT IN FREE-ELECTRON LASERS
Authors: WANG CHANG-BIAO  ,   电子科技大学高能电子学研究所,成都610054
Published: November 2020

The problem of stability of the equilibrium helical orbit in free-electron lasers with a combined ideal helical wiggler and uniform axial guide field is successfully solved by means of the Lyapunov's stability theory of motion. The unstable region is determined with perturbation of initial energy taken into account by Lyipunov's first method. An appropriate Lyapuov's function is constructed; accordingly, the low and high guide field stable regions are shown rigorously.
SOLITON PROPAGATION IN OPTICAL WAVEGUIDES MADE OF MEDIA WITH NON-CENTRAL SYMMETRY
Authors: GUO QI  , REN ZHAN-MEI  , LIAO CHANG-JUN  , LIU SONG-HAO  ,   (1)华南师范大学量子电子学研究所,广州510631; (2)中国科学技术大学,博士后研究人员
Published: November 2020

In this paper, it is demonstrated theoretically that, under the strong dispersion condition, the optical waveguides made of the media with non-central symmetry where the second order nonlinear susceptibility (SONS) is not zero, e.g.the thin-film waveguides and crystalline fibers, can also support these solitons but the nonlinear-index coefficient (NIC) in the nonlinea schro-dinger equation should be substituted by the effective NIC defined here. The results obtained here can be easily extended to discuss the other nonlinear effects connected with the NIC in the media with noncentral symmetry because of the definition of the effective NIC.
PHOTOACOUSTIC SPECTROSCOPY INVESTIGATION OF NH PHYSISORPTION ON CLEAN AND OXYGEN PRE-ADSORBED Cu SURFACE
Authors: HU CHANG-WU  , YU LI-MIN  , XU YING  , ZHU ANG-RU  , WANG ZHAO-YONG  ,   (1)复旦大学应用表面物理国家重点实验室,上海200433; (2)香港浸会学院物理系
Published: November 2020

Ammonia physisorption on polycrystalline copper surface at 85 K has been studied by infrared photoacoustic spectroscopy. Much attention has been paid on the vibrational spectra of ammonia symmetric deformation mode and its band variation as a function of coverage. The different coverage dependent behaviors are exhibited for ammonia adsorption respectively on clean and on oxygen pre-adsorbed copper surface, and can be explained by assuming that ammonia follows different adsorption mechanisms. Studies of the minute discrepancy between them further illustrate the applicability of this technique in surface adsorption analysis.
STRUCTURE STUDY OF NANOMETER-SIZE CRYSTALLINE Ti FILMS
Authors: WU XUE-MEI  , WU QIN-CHONG  , SUI YI-FENG  ,   (1)苏州大学物理系,苏州215006; (2)中国科学院等离子体物理研究所,合肥230031
Published: November 2020

The nanimeter-size crystalline Ti films have been manufactured by use of a sputtering deposition utilizing Electron Cyclotron Resonance (ECR) plasma at room temperature. The substrates are quartz glass, NaCl monocrystal and pure Al. The structure and the composition of the Ti films have been determined by using XRD, TEM, XPS. The results show that the granular Ti films consist of nanocrystal particles with the uniformi grain size, the average grain size d<10nm, and with a stable abnormal fcc structure. The influence of working parameters on the crystal structure, the grain size, deposition rate and adhension of the films have been studied systematically. The mechanism of depositing Ti films have been discussed.