cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.34808/pagp-m765
title: Thermal behavior of VO2/V2O3 nanostructures obtained at 1000°C under argon atmosphere

description: The DataSet contains the results of the thermal behavior of the VO2/V2O3 nanostructures.  The vanadium oxides nanostructures were synthesized by the sol-gel method, where obtained xerogel powder was annealing at 1000°C under an argon atmosphere. The information about xerogel powder synthesis is described in the Journal of Nanomaterials.
Thermogravimetric analysis (TG) and Differential scanning calorimetry (DSC) measurements were carried out under synthetic air atmosphere from 30°C to 700°C (with a heating rate of 15 °C/min) using Netzsch STA 449 F1. The thermal behavior was also studied with mass spectrum (MS). The gases that come out from the samples during heating were monitored by the quadruple mass spectrometer Netzsch QMS 403C Aeolos. The mass spectra were measured for selected m/z from 12 to 46.
DOI: 10.34808/zss1-x178
title: Nonlinear impedance of Bi2VO5.5 ceramic prepared by traditional melt quenching technique was measured with impedance spectroscopy method at low temperature region

description: The nonlinear electrical properties of Bi2VO5.5 ceramic prepared by traditional melt quenching technique was measured by impedance spectroscopy method. 
Bi2VO5.5 ceramic was prepared using two step synthesis:
In the first step, the polycrystalline Bi2VO5.5 ceramic was synthesised via a conventional solid state reaction route. The stoichiometric mixture of initial powders of Bi2O3 and V2O5 were ball-milled in pure acetone for 6 h. The milling was performed in steps of 1 h with rest intervals of 10 min. The mixture was initially heated up to 770 K and then to 1020 K in air. It was kept at this temperature for 24 h and grinded next. The calcined powder was mixed with a small amount of ethyl alcohol binder and cold-pressed into pellets (12 mm in diameter and 2–3 mmin thickness) under a compacting pressure of 26 kNcm−2. The obtained pellets were sintered at 1070 K for 24 h with heating and cooling rates of 50 Kh−1.
In the second step, the obtained Bi2VO5.5 was powdered in mortar and next melted using the conventional melt quenching technique. The melting was conducted in alumina crucibles at 1173 K for few minutes. The melt was poured onto a preheated (573 K) brass plate and pressed by another plate to obtain flat circular disks.
For the electrical measurements gold electrodes were evaporated at the preheated samples. Impedance measurements were carried out in the temperature range from 153 K to 423 K, frequency range of 10 mHz to 1MHz, with the ac voltage of 1 Vrms with Concept 40 broadband dielectric spectrometer. The higher harmonic components (harmonic 1 and 2) were measured up to frequency of 1000 Hz. Here the impedance for harmonic components was defined as the ratio of the voltage base wave to the n-th harmonic current component: Zn∗= U0∗/In∗, where Zn⁎ including the base wave generally depend on the sample voltage U1⁎ base wave amplitude. From Zn⁎ allother independent variables are calculated. The dependence of current density on the cosinusoidal electric field E(t)= E0cos(ωt) leads to the following expression:
j´ = σ´0hE0 cos (ωt) + σ´1hE0 cos (2ωt) + σ´2hE0 cos (3ωt) + …Where σ´0h denotes base conductivity, while σ´1h, σ´2h etc. are higher harmonics conductivity. The admittivity for harmonic components with n ≥1, is calculated from relation σ⁎n = i2πfε0ε⁎n.
DOI: 10.6084/m9.figshare.14980536.v1
title: Community data (all).csv

description: Data on proportion of the Mchadijvari and Khachik community members that harvest wild plants.
DOI: 10.6084/m9.figshare.14980536
title: Community data (all).csv

description: Data on proportion of the Mchadijvari and Khachik community members that harvest wild plants.
DOI: 10.6084/m9.figshare.14980533
title: Mchadijvari community fruit and nut harvest

description: Wild plant harvested by the Mchadijvari community in the north of Georgia. Data also includes the perceived importance of each plant to the individual.
DOI: 10.34808/tfrh-2565
title: Linear impedance of Bi2VO5.5 ceramic prepared by traditional melt quenching technique measured with impedance spectroscopy method at low temperature region

description: The linear electrical properties of Bi2VO5.5 ceramic prepared by traditional melt quenching technique was measured by impedance spectroscopy method. 
Bi2VO5.5 ceramic was prepared using two step synthesis:
In the first step, the polycrystalline Bi2VO5.5 ceramic was synthesised via a conventional solid state reaction route. The stoichiometric mixture of initial powders of Bi2O3 and V2O5 were ball-milled in pure acetone for 6 h. The milling was performed in steps of 1 h with rest intervals of 10 min. The mixture was initially heated up to 770 K and then to 1020 K in air. It was kept at this temperature for 24 h and grinded next. The calcined powder was mixed with a small amount of ethyl alcohol binder and cold-pressed into pellets (12 mm in diameter and 2–3 mmin thickness) under a compacting pressure of 26 kNcm−2. The obtained pellets were sintered at 1070 K for 24 h with heating and cooling rates of 50 Kh−1.
In the second step, the obtained Bi2VO5.5 was powdered in mortar and next melted using the conventional melt quenching technique. The melting was conducted in alumina crucibles at 1173 K for few minutes. The melt was poured onto a preheated (573 K) brass plate and pressed by another plate to obtain flat circular disks.
For the electrical measurements gold electrodes were evaporated at the preheated samples. Impedance measurements were carried out in the temperature range from 153 K to 423 K, in the frequency range from 10mHz to 10 MHz and with the ac voltage of 1 Vrms with Concept 40 broadband dielectric spectrometer.
DOI: 10.34808/4vae-ck94
title: Linear impedance of Bi2VO5.5 glass-ceramic measured with impedance spectroscopy method at low temperature region

description: The linear electrical properties of Bi2VO5.5 glass-ceramic prepared by traditional melt quenching technique was measured by impedance spectroscopy method. 
Bi2VO5.5 glas-ceramic was prepared from appropriate amounts of Bi2O3 and V2O5 powders. The melting was conducted in alumina crucibles at 1173 K for few minutes. The melt was poured onto a preheated (573 K) brass plate and pressed by another plate to obtain flat circular disks.
For the electrical measurements gold electrodes were evaporated at the preheated samples. Impedance measurements were carried out in the temperature range from 153 K to 423 K, in the frequency range from 10mHz to 1 MHz and with the ac voltage of 1 Vrms with Concept 40 broadband dielectric spectrometer.
DOI: 10.34808/s1w7-p339
title: Linear impedance of Bi2VO5.5 glass-ceramic annealed at 423 K measured with impedance spectroscopy method at low temperature region

description: The linear electrical properties of Bi2VO5.5 glass-ceramic annealed at 423 K prepared by traditional melt quenching technique was measured by impedance spectroscopy method. 
Bi2VO5.5 glas-ceramic was prepared from appropriate amounts of Bi2O3 and V2O5 powders. The melting was conducted in alumina crucibles at 1173 K for few minutes. The melt was poured onto a preheated (573 K) brass plate and pressed by another plate to obtain flat circular disks. Next samples were annealed at 423 K. 
For the electrical measurements gold electrodes were evaporated at the preheated samples. Impedance measurements were carried out in the temperature range from 153 K to 423 K, in the frequency range from 10mHz to 10 MHz and with the ac voltage of 1 Vrms with Concept 40 broadband dielectric spectrometer.
DOI: 10.34808/1az2-7y27
title: Nonlinear impedance of Bi2VO5.5 glass-ceramic heat-treated at 913 K was measured with impedance spectroscopy method at low temperature region

description: The nonlinear electrical properties of Bi2VO5.5 glass-ceramic heat-treated at 913 K was measured by impedance spectroscopy method. 
Bi2VO5.5 glas-ceramic was prepared from appropriate amounts of Bi2O3 and V2O5 powders. The melting was conducted in alumina crucibles at 1173 K for few minutes. The melt was poured onto a preheated (573 K) brass plate and pressed by another plate to obtain flat circular disks. Next samples were annealed at 913 K. 
For the electrical measurements gold electrodes were evaporated at the preheated samples. Impedance measurements were carried out in the temperature range from 153 K to 413 K, frequency range of 10 mHz to 10 MHz, with the ac voltage of 1 Vrms with Concept 40 broadband dielectric spectrometer. The higher harmonic components (harmonic 2) were measured up to frequency of 1000 Hz. Here the impedance for harmonic components was defined as the ratio of the voltage base wave to the n-th harmonic current component: Zn∗= U0∗/In∗, where Zn⁎ including the base wave generally depend on the sample voltage U1⁎ base wave amplitude. From Zn⁎ allother independent variables are calculated. The dependence of current density on the cosinusoidal electric field E(t)= E0cos(ωt) leads to the following expression:
j´ = σ´0hE0 cos (ωt) + σ´1hE0 cos (2ωt) + σ´2hE0 cos (3ωt) + …Where σ´0h denotes base conductivity, while σ´1h, σ´2h etc. are higher harmonics conductivity. The admittivity for harmonic components with n ≥1, is calculated from relation σ⁎n = i2πfε0ε⁎n.
DOI: 10.34808/yn2z-z449
title: Nonlinear impedance of as-quenched Bi2VO5.5 glass-ceramic was measured with impedance spectroscopy method at low temperature region

description: The nonlinear electrical properties of as-quenched Bi2VO5.5 glass-ceramic was measured by impedance spectroscopy method. 
Bi2VO5.5 glas-ceramic was prepared from appropriate amounts of Bi2O3 and V2O5 powders. The melting was conducted in alumina crucibles at 1173 K for few minutes. The melt was poured onto a preheated (573 K) brass plate and pressed by another plate to obtain flat circular disks. 
For the electrical measurements gold electrodes were evaporated at the preheated samples. Impedance measurements were carried out in the temperature range from 153 K to 423 K, frequency range of 10 mHz to 1 MHz, with the ac voltage of 1 Vrms with Concept 40 broadband dielectric spectrometer. The higher harmonic components (harmonic 1 and 2) were measured up to frequency of 1000 Hz. Here the impedance for harmonic components was defined as the ratio of the voltage base wave to the n-th harmonic current component: Zn∗= U0∗/In∗, where Zn⁎ including the base wave generally depend on the sample voltage U1⁎ base wave amplitude. From Zn⁎ allother independent variables are calculated. The dependence of current density on the cosinusoidal electric field E(t)= E0cos(ωt) leads to the following expression:
j´ = σ´0hE0 cos (ωt) + σ´1hE0 cos (2ωt) + σ´2hE0 cos (3ωt) + …Where σ´0h denotes base conductivity, while σ´1h, σ´2h etc. are higher harmonics conductivity. The admittivity for harmonic components with n ≥1, is calculated from relation σ⁎n = i2πfε0ε⁎n.
DOI: 10.34808/1p7t-8p84
title: Nonlinear impedance of Bi2VO5.5 ceramic prepared by traditional melt quenching technique was measured with impedance spectroscopy method at high temperature region

description: The nonlinear electrical properties of Bi2VO5.5 ceramic prepared by traditional melt quenching technique was measured by impedance spectroscopy method. 
Bi2VO5.5 ceramic was prepared using two step synthesis:
In the first step, the polycrystalline Bi2VO5.5 ceramic was synthesised via a conventional solid state reaction route. The stoichiometric mixture of initial powders of Bi2O3 and V2O5 were ball-milled in pure acetone for 6 h. The milling was performed in steps of 1 h with rest intervals of 10 min. The mixture was initially heated up to 770 K and then to 1020 K in air. It was kept at this temperature for 24 h and grinded next. The calcined powder was mixed with a small amount of ethyl alcohol binder and cold-pressed into pellets (12 mm in diameter and 2–3 mmin thickness) under a compacting pressure of 26 kNcm−2. The obtained pellets were sintered at 1070 K for 24 h with heating and cooling rates of 50 Kh−1.
In the second step, the obtained Bi2VO5.5 was powdered in mortar and next melted using the conventional melt quenching technique. The melting was conducted in alumina crucibles at 1173 K for few minutes. The melt was poured onto a preheated (573 K) brass plate and pressed by another plate to obtain flat circular disks.
For the electrical measurements gold electrodes were evaporated at the preheated samples. Impedance measurements were carried out in the temperature range from 373 K to 913 K, frequency range of 10 mHz to 1MHz, with the ac voltage of 1 Vrms with Concept 40 broadband dielectric spectrometer. The higher harmonic components (harmonic 2) were measured up to frequency of 1000 Hz. Measurements were conducted during heating and cooling. Here the impedance for harmonic components was defined as the ratio of the voltage base wave to the n-th harmonic current component: Zn∗= U0∗/In∗, where Zn⁎ including the base wave generally depend on the sample voltage U1⁎ base wave amplitude. From Zn⁎ allother independent variables are calculated. The dependence of current density on the cosinusoidal electric field E(t)= E0cos(ωt) leads to the following expression:
j´ = σ´0hE0 cos (ωt) + σ´1hE0 cos (2ωt) + σ´2hE0 cos (3ωt) + …Where σ´0h denotes base conductivity, while σ´1h, σ´2h etc. are higher harmonics conductivity. The admittivity for harmonic components with n ≥1, is calculated from relation σ⁎n = i2πfε0ε⁎n.
DOI: 10.34808/3jz5-mq25
title: Depth profile of the chemical composition of the Au-Ag multilayers

description: 


Silver and gold multilayers were deposited on a silicon substrate by magnetron sputtering method. Both type, Au and Ag thin films had 2 nm of thickness. Totally structure had thickness of 6 nm (Au-Ag-Au). That prepared multilayers were measured by XPS method. To obtain a depth profile of chemical composition, an Argon ion (Ar+) gun was used for etching surface of sample. Each cycle of etching takes 60 sec. It was repeated 6 times. As a result of etching, and simultaneous XPS measurements a profile of concentration. For measurements XPS UHV system, Omicron Nanotechnology, equpied with Ar ion gun was used.
DOI: 10.34808/fxwa-ce13
title: Depth profile of the gold-silver bimetallic structures

description: Silver and gold bimetallic layers were deposited on a silicon substrate by magnetron sputtering method. Both, Au and Ag layers had 3 nm of thickness. That prepared nanostructures were measured by XPS method. To obtain a depth profile of chemical composition, an Argon ion (Ar+) gun was used for etching surface of sample. Each cycle of etching takes 30 sec. It was repeated 7 times. As a result of etching, and simultaneous XPS measurements a profile of concentration. For measurements XPS UHV system, Omicron Nanotechnology, equpied with Ar ion gun was used.
DOI: 10.34808/gb2e-eh30
title: Structural investigations of the Al2O3 ultra thin films

description: Ultra-thin layers of Al2O3 were deposited by atomic layer deposition (ALD) (Beneq TFS 200 ALD system). This method provides precise thickness control down to a single atomic layer. The precursors used were trimethylaluminum (Sigma-Aldrich) and purified water. The deposition of the atomic layer was carried out at 200 °C. Samples with a thickness of 2 and 8 nm of alumina, deposited on silicon (111) substrates,  were selected for the tests. A Philips X'Pert diffractometer system with Cu filtered Kα radiation in the range 10° – 80° of 2θ was used for XRD measurements. No crystalline phase was bserved in prepared samples.
DOI: 10.34808/sfc1-1m17
title: Plasmon resonance in gold-silver nanoalloys

description: Surface plasmon resonance (SPR) can lead to improve or formation a new linear or nonlinear optical phenomena. Especially it can enhance a light emission from luminescence materials. The presence of metal nanostructures or nanoparticles is necessary to excitation of the SPR. It is well known that gold and silver nanostructures exhibit plasmon resonance at around 550 nm and 400 nm, respectively. However, plasmonic platforms consisting of an alloy of Au and Ag result in tunable optical properties depending on its composition.
Metal nanostructures with dimensions in a range of 20 nm- 60 nm were formed as a result of thermal treatment of bimetal thin film. Structures were deposited on Corning 1737 glass and silicon substrates by magnetron sputtering method. Plasmon resonance was observed by UV-VIS spectroscopy. Measured pure Ag and Au structures and nanoalloys wih mix of composition.
DOI: 10.34808/q0pe-8619
title: Plasmon resonance in a TiO2-Au NPs structures

description: Investigated structures were deposited on a pre cleaned Corning 1737 glass substrates, which provided flat optical transmission characteristics and high transmission coefficient in a visible light range. Plasmonic nanostructures were formed as a result of thermal annealing. For gold films with thickness of 2.8 nm depiction a table-top dc magnetron sputtering system (EM SCD 500, Leica), equipped with quartz microbalance for in-situ thickness measurements, was used. Films were deposited from a high purity (99.99%) gold target in pure argon (99.999%) plasma. For film deposition with a rate of ca. 0.1nm/s, ca. 10W of incident power was applied. Annealing of gold thin film, for 15 min at 550 °C in air atmosphere, resulted in forming spherical isolated islands. 
TiO2 thin film, with thickness of 200 nm, was prepared by radio frequency (RF) magnetron sputtering process, using Omicron NanoScience, four targets sputter system. Ti target was sputtered in an argon-oxygen atmosphere (Ar:O2 flow ratio: 5sccm:30sccm, both gasses with purity of 99.999%). Used of RF power of 60W resulted in deposition with a ratio ca. 0.05 nm/s. Substrates with plasmonic nanostructures were heated to 200 ⁰C during TiO2 film deposition process.
Optical properties of manufactured structures were investigated using Evolution 220 UV-Visible Spectrophotometer in a range of 200 nm – 1000 nm. Measured optical properties of structures with various thickness of initial Au layer (1.5, 2.8 and 4.0 nm) and various profiles of heating, during manufacturing.
DOI: 10.34808/tm6p-gm05
title: Thermal behavior of TeOx xerogel powder under different atmospheres

description: The DataSet contains the results of the thermal behavior of the TeOx xerogel powder measured under different atmospheres. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. The sol was obtained by vigorously stirring precursor solution at 50°C for 2h, then the temperature was raised to 75°C for the next 2h. The obtained gel was dried at 120°C under an argon atmosphere. 
Thermogravimetric analysis (TG) and Differential scanning calorimetry (DSC) measurements were carried out under argon atmosphere from 40°C to 910°C (with a heating rate of 5 °C/min) and under synthetic air atmosphere in the temperature range 40-500°C (with a heating rate of 10 °C/min) using Netzsch STA 449 F1.
DOI: 10.34808/676m-qx35
title: Optical properties TeOx gels doped with the rare-earth ions

description: The DataSet contains the UV-Vis spectra of TeOx gels doped with the rare-earth ions. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. Next, the 5% mol of the rare-earth ions were added, the nitrates were used as a source of rare-earth ions. The sol was obtained by vigorously stirring precursor solution at 50°C for 2h, then the temperature was raised to 75°C for the next 2h. 
Optical transmission characteristics were recorded with Evolution 220 UV-Visible Spectrophotometer in a range of 190 nm –1100 nm.
DOI: 10.34808/gk9b-0z15
title: Optical properties of TeOx gels doped with a mix of rare-earth ions

description: The DataSet contains the UV-Vis spectra of the TeOx gels doped with a mix of rare-earth ions. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. Next, the different molar concentration of rare-earth ions was added, nitrates were used as a source of rare-earth ions. The sol was obtained by vigorously stirring precursor solution at 50°C for 2h, then the temperature was raised to 75°C for the next 2h. 
Optical transmission characteristics were recorded with Evolution 220 UV-Visible Spectrophotometer in a range of 190 nm –1100 nm.
DOI: 10.34808/25yp-7b87
title: XRD patterns of TeOx-BaO-BiO powder

description: The DataSet contains the XRD patterns of the TeOx-BaO-BiO powder. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor), barium carbonate, and bismuth carbonate with thetraetylene glycol, water, ethanol, and acetic acid. (Samples molar concentration: 73TeO2-4BaO-3Bi2O3 and 73TeO2-3BaO-4Bi2O3). The sol was obtained by vigorously stirring precursor solution at 50°C for 2h, then the temperature was raised to 75°C for the next 2h. The obtained gels were dried in two different ways. The 73TeO2-4BaO-3Bi2O3 and 73TeO2-3BaO-4Bi2O3 gels were dried at 120°C under an argon atmosphere. Next, the xerogel powders were first annealing at 340°C under an argon atmosphere, then at 450°C under oxidizing atmosphere. In the second approach, the 73TeO2-4BaO-3Bi2O3 gel was dried under 80 bar at 80°C in an autoclave.
X-ray diffraction patterns (XRD) were collected on a Philips X’PERT PLUS diffractometer with Cu Ka radiation (1.5406 Å) and ranging from 10 to 80 degrees.
DOI: 10.34808/qmnr-0614
title: Thermal behavior of TeOx powder

description: The DataSet contains the results of the thermal behavior of the TeOx powder. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. The sol was obtained by vigorously stirring precursor solution at 50°C for 2h, then the temperature was raised to 75°C for the next 2h. The obtained gel was dried at 120°C under an argon atmosphere. Next, the xerogel powder was annealing at 340°C under an argon atmosphere.  
Thermogravimetric analysis (TG) and Differential scanning calorimetry (DSC) measurements were carried out under argon atmosphere from 40°C to 600°C (with a heating rate of 10 °C/min) and under synthetic air atmosphere in the temperature range 40-500°C (with a heating rate of 10 °C/min) using Netzsch STA 449 F1.
DOI: 10.34808/5sk8-v308
title: XRD patterns of TeOx powder

description: The DataSet contains the XRD patterns of the TeOx powder. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. The sol was obtained by vigorously stirring precursor solution at 50°C for 2h, then the temperature was raised to 75°C for the next 2h. The obtained gel was dried at 120°C under an argon atmosphere. The xerogel powder was first annealing at 340°C under an argon atmosphere, then at 400°C or 450°C under oxidizing atmosphere. 
X-ray diffraction patterns (XRD) were collected on a Philips X’PERT PLUS diffractometer with Cu Ka radiation (1.5406 Å) and ranging from 10 to 80 degrees.
DOI: 10.5281/zenodo.4898983
title: Dataset of "Interplay of mechanics and chemistry governs wear of diamond-like carbon coatings interacting with ZDDP-additivated lubricants"

description: AFM surfaces topographies of diamond-like carbon coatings used for contact mechanics calculations (Fig. 1). Initial atomic configurations for quantum mechanical molecular statics calculations (Fig. 6). Quantum mechanical molecular dynamics trajectories (Fig. 7-8).
DOI: 10.5281/zenodo.4898982
title: Dataset of "Interplay of mechanics and chemistry governs wear of diamond-like carbon coatings interacting with ZDDP-additivated lubricants"

description: AFM surfaces topographies of diamond-like carbon coatings used for contact mechanics calculations (Fig. 1). Initial atomic configurations for quantum mechanical molecular statics calculations (Fig. 6). Quantum mechanical molecular dynamics trajectories (Fig. 7-8).