Chalcogenide Letters最新文献_第9页

Structural, morphology and optical properties studies of Ni doped CdSe thin films Ni掺杂CdSe薄膜的结构、形貌及光学性能研究

IF 1 4区材料科学

Chalcogenide Letters Pub Date : 2023-01-01 DOI: 10.15251/cl.2023.205.367

A. J. Jarjees Alsoofy, R. Ali, Z. A. Mosa, N. Habubi, S. Chiad

引用次数: 0

Structural, Swanepoel’s method, optical and electrical parameters of vacuum evaporated Zn50Se50 thin films 真空蒸发Zn50Se50薄膜的结构、斯瓦内普尔法、光学和电学参数

IF 1 4区材料科学

Chalcogenide Letters Pub Date : 2023-01-01 DOI: 10.15251/cl.2023.201.19

A. Alwany, G. Youssef, M. Algradee, M. Abdel-Rahim, A. Alnakhlani, B. Hassan

引用次数: 0

Structural, electronic and thermoelectric properties of LiAlX2 (X=S and Se) chalcopyrites: promising for thermoelectric power generators LiAlX2（X=S和Se）硫黄铁矿的结构、电子和热电性能：有望用于热电发电机

IF 1 4区材料科学

Chalcogenide Letters Pub Date : 2023-01-01 DOI: 10.15251/cl.2023.201.73

J. Kumari, C. Singh, R. Agrawal, B. L. Choudhary, A. Verma

{"title":"Structural, electronic and thermoelectric properties of LiAlX2 (X=S and Se) chalcopyrites: promising for thermoelectric power generators","authors":"J. Kumari, C. Singh, R. Agrawal, B. L. Choudhary, A. Verma","doi":"10.15251/cl.2023.201.73","DOIUrl":"https://doi.org/10.15251/cl.2023.201.73","url":null,"abstract":"Herein, we have inquired the structural, electronic and thermoelectric properties of the couple of chalcopyrite structured solids LiAlX2 (X=S and Se) with the help of density functional theory (DFT), which is tracked by resolution of the Boltzmann transport equation with the constant relaxation time calculations. The LDA (Localized Density Approximation), PBE (Perdew-Burke-Ernzerhof), PBEsol (PBE functional revised for solids) and WC (Wu-Cohen) exchange correlation potentials have been used. The calculated lattice constants a = 5.271 Å; c = 10.178 Å and a = 6.226 Å; c = 12.165 Å for LiAlS2 and LiAlSe2 respectively and the band gap of the mentioned compounds are found in range from 1.74 eV to 3.13 eV. The dependency of thermoelectric parameters are calculated with different temperature (300-800K) and carrier concentration 1018 1019 cm-3 . From the study of ZT (figure of merit’s ZT= S2 σT/κ the dimensionless parameter) and it is found that it’s value for both the compounds in n-type as well as in p-type region is ‘unity’. Since these compounds can be the promising candidate for thermoelectric devices also these compounds are non-toxic, eco-friendly and good alternative for the green and renewable source of electric power generators.","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46062494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Composition-dependent properties and network structure of Ge-Se-Te chalcogenide glasses Ge-Se-Te硫系玻璃的组分依赖性质和网络结构

IF 1 4区材料科学

Chalcogenide Letters Pub Date : 2023-01-01 DOI: 10.15251/cl.2023.201.1

L. Yang, G. Zhou, C. G. Lin

引用次数: 0

Theoretical investigation of fundamental physical properties of full-Heusler Co2VZ (Z= Al, Bi, Ga, Ge) compounds 全heusler Co2VZ (Z= Al, Bi, Ga, Ge)化合物基本物理性质的理论研究

IF 1 4区材料科学

Chalcogenide Letters Pub Date : 2023-01-01 DOI: 10.15251/cl.2023.207.535

S. Mahla, R. Agrawal, S. Kumar, P. Singh, M. Lal, S. Singh, A. Verma

{"title":"Theoretical investigation of fundamental physical properties of full-Heusler Co2VZ (Z= Al, Bi, Ga, Ge) compounds","authors":"S. Mahla, R. Agrawal, S. Kumar, P. Singh, M. Lal, S. Singh, A. Verma","doi":"10.15251/cl.2023.207.535","DOIUrl":"https://doi.org/10.15251/cl.2023.207.535","url":null,"abstract":"A subclass of ternary intermetallic known as Heusler compounds is being employed in the steel industry to increase material strength. This study examines the structural, electrical, optical, and magnetic properties of Co2VZ (Z=Al, Bi, Ge, Si) compounds using two different methods. First is full potential linearized augmented plane wave (FP-LAPW) method by WIEN2k and second is pseudo potential method by Atomic Tool Kit-Virtual Nano-Lab. The equivalent energy gaps in the minority-spin of Co2VZ (Z= Al, Bi, Ga, Ge) with WIEN2k code, which displays 100% spin polarization, are 0.703, 0.384, 0.186, and 0.67 eV near to the Fermi level. Furthermore, it is discovered that these compounds are absolutely half-metallic ferromagnetic (HMF). With the exception of Co2VBi, which exhibits metallic properties, the aforementioned compounds exhibit 0.525, 0.0, 0.553, and 0.786 eV band gaps in the ATK-VNL code and indicate 100% spin polarization. The magnetic moments of the compounds Co2VZ (Z= Al, Bi, Ga, Ge) are found to be 2.976, 4.003, 1.989, and 3.001 µB, respectively, in the WIEN2k code. The relative magnetic moments of the aforementioned compounds are also 1.991, 3.947, 1.999, and 2.997 µB, according to the ATK-VNL code.","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67024963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photo-induced effects in Ge-Ga-Se films Ge-Ga-Se薄膜的光致效应

IF 1 4区材料科学

Chalcogenide Letters Pub Date : 2023-01-01 DOI: 10.15251/cl.2023.207.507

Z. Zhang, Y. Sun, Z. Yang, T. Wei, J. Wu, X. S. Wang, R. Wang

引用次数: 0

Phase-change transіtіon of chalcogenіde system Ge8Sb2-xBіxTe11 thіn fіlm usіng sіngle femtosecond laser pulses 采用单飞秒激光脉冲的硫原<e:1>体系(ge8sb2 - xb<s:1> xte11)的相变转换<e:1>

IF 1 4区材料科学

Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.909

V. Karabyn, J. Mіstrіk, Y. Tveryanovіch, P. Bezdіcka, D. Hіmіcs, B. Frumarova, P. Knotek, T. Wagner

引用次数: 0

Synthesis, structure and properties of PbO–PbF2–B2O3–SiO2 glasses pbo - pb_2 - b2o3 - sio2玻璃的合成、结构与性能

IF 1 4区材料科学

Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.891

Y. Hordieiev, A. Zaichuk

{"title":"Synthesis, structure and properties of PbO–PbF2–B2O3–SiO2 glasses","authors":"Y. Hordieiev, A. Zaichuk","doi":"10.15251/cl.2022.1912.891","DOIUrl":"https://doi.org/10.15251/cl.2022.1912.891","url":null,"abstract":"The structure, thermal and some physical properties of lead fluoroborate glasses containing 30 mol% SiO2 have been investigated by differential thermal analysis, X-ray diffraction and Fourier-transform infrared spectroscopy. The glasses were prepared by the conventional melt-quenching method. Fourier-transform infrared spectroscopy results showed that the network of these glasses consists mainly of BO3, BO4, SiO4, and PbO4 structural units. The thermal stability of the glass samples determined by differential thermal analysis was found to be about 80°C. Dilatometric measurements showed that the glass transition temperature and dilatometric softening temperature decrease with increasing lead content, whereas the coefficient of thermal expansion increases. The density and molar volume increased with the increase in lead content. The conductivity of the investigated glasses mainly depends on the mobility of F– and Pb2+ ions. The variation in volume resistance upon changing the composition has been correlated with the structural changes in the glass network. The results obtained in this study indicate that the investigated glasses can be potential candidates for advanced technologies as solder and sealing materials.","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41313390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Multicomponent Ge-As-Te-Pb chalcogenide glasses for radiations shielding applications 辐射屏蔽应用的多组分Ge-As-Te-Pb硫族化物玻璃

IF 1 4区材料科学

Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.939

M. Ezzeldien, M. A. Salamab, M. Hasaneen, A. A. El-Maaref, M. M. Soraya, N. Shaalan, Z. Alrowaili, M. Ahmad

{"title":"Multicomponent Ge-As-Te-Pb chalcogenide glasses for radiations shielding applications","authors":"M. Ezzeldien, M. A. Salamab, M. Hasaneen, A. A. El-Maaref, M. M. Soraya, N. Shaalan, Z. Alrowaili, M. Ahmad","doi":"10.15251/cl.2022.1912.939","DOIUrl":"https://doi.org/10.15251/cl.2022.1912.939","url":null,"abstract":"Phy-X/PSD online program is used to obtain various radiation shielding indices in a photon energy region located between 0.15 and 15 MeV for Ge25-As10-Te65-x-Pbx (x = 2, 4, 6, 8, 10 at %) chalcogenide glasses. The linear attenuation coefficient LAC, mass attenuation coefficients MAC, effective atomic number Zeff, effective electron density Neff, half-value layer, HVL, tenth value layer TVL, mean free path MEF, energy absorption and exposure buildup factors (EABF, EBF), and fast neutron cross section FNRCS have been introduced. The findings conclude that the LAC and MAC measurements are greater and therefore better than commercial and traditional glasses. Also, it was found that HVL, TVL, and MFP were reduced with the addition of Pb to the tested glasses, which improve the shielding characteristics. Zeff and Neff of the compositions under study were varied as (42.58- 59.75) and (2.36-3.09 x 1023 electrons/g) respectively. A reduction was noticed in EBF and EABF values with the increment of Pb concentration in the investigated glasses at the entire photon energies, at all values of MFP that emphasize the enhancement of shielding properties of these glasses with the addition of lead. FNRCS were found to be changed between 0.87 and 0.095 Cm-1 as Pb content varies from 0.0 to 0.01 respectively that let these glasses","PeriodicalId":9710,"journal":{"name":"Chalcogenide Letters","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41318335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and electrocatalytic performance for hydrogen evolution reaction of ReSe2 nanosheets ReSe2纳米片的合成及其对析氢反应的电催化性能

IF 1 4区材料科学

Chalcogenide Letters Pub Date : 2022-12-21 DOI: 10.15251/cl.2022.1912.965

X. Y. Zhang, J. Liu, Y. He, Z. Liu, A. Wei

引用次数: 0