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Nanostructured designs for extreme strain hardening of metallic glasses 金属玻璃极端应变硬化的纳米结构设计
IF 2.1 4区 物理与天体物理
Solid State Communications Pub Date : 2025-06-27 DOI: 10.1016/j.ssc.2025.116065
Yuxuan Cui , Zhilin Long , Rutong Wan , Lidong You
{"title":"Nanostructured designs for extreme strain hardening of metallic glasses","authors":"Yuxuan Cui ,&nbsp;Zhilin Long ,&nbsp;Rutong Wan ,&nbsp;Lidong You","doi":"10.1016/j.ssc.2025.116065","DOIUrl":"10.1016/j.ssc.2025.116065","url":null,"abstract":"<div><div>The absence of ductility has historically limited the practical applications of metallic glasses. Despite extensive research over many years, a sophisticated and effective solution remains elusive. Inspired by the design of fractal nanostructures, we propose an enhanced nanostructure design method that effectively mitigates the complexity of engineering applications. Through simulation studies, we demonstrate that by optimizing nanostructures, metallic glasses exhibit substantial tensile ductility and strain hardening. This enhancement is attributed to the synergistic effect of multiple nanobranches, which collectively contribute to the deformation process, impeding the formation of shear bands and inducing homogeneous deformation of the metallic glass, thereby altering its conventional deformation mode. To achieve enhanced plasticity and substantial strain hardening, it is essential to maintain a low overall connectivity of the nanostructured metallic glass, thereby preventing the formation of shear bands throughout the sample.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"404 ","pages":"Article 116065"},"PeriodicalIF":2.1,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of point defect and surface polarity on the magnetism of undoped ZnO 点缺陷和表面极性对未掺杂ZnO磁性的影响
IF 2.1 4区 物理与天体物理
Solid State Communications Pub Date : 2025-06-26 DOI: 10.1016/j.ssc.2025.116064
Hui Feng , Zihan Chen , Huahan Zhan , Junyong Kang , Yongliang Zhou
{"title":"Effects of point defect and surface polarity on the magnetism of undoped ZnO","authors":"Hui Feng ,&nbsp;Zihan Chen ,&nbsp;Huahan Zhan ,&nbsp;Junyong Kang ,&nbsp;Yongliang Zhou","doi":"10.1016/j.ssc.2025.116064","DOIUrl":"10.1016/j.ssc.2025.116064","url":null,"abstract":"<div><div>The effects of ZnO surfaces with different orientations and point defects on magnetism remains not fully understood, and it is experimentally difficult to control the growth orientation and point vacancies in ZnO. Therefore, to investigate the magnetism source of undoped ZnO, first-principles calculations were conducted on ZnO (<span><math><mrow><mn>10</mn><mover><mn>1</mn><mo>‾</mo></mover><mn>0</mn></mrow></math></span>), (<span><math><mrow><mn>10</mn><mover><mn>1</mn><mo>‾</mo></mover><mn>2</mn></mrow></math></span>), and (<span><math><mrow><mn>10</mn><mover><mn>1</mn><mo>‾</mo></mover><mn>1</mn></mrow></math></span>) surfaces, both with and without defects, including oxygen or zinc vacancies (V<sub>O</sub> or V<sub>Zn</sub>). Results revealed that the nonpolar (<span><math><mrow><mn>10</mn><mover><mn>1</mn><mo>‾</mo></mover><mn>0</mn></mrow></math></span>) surface exhibited ferromagnetism in the presence of V<sub>Zn</sub>, originating from the exchange interaction between unpaired O-2<em>p</em> electrons induced by V<sub>Zn</sub>. The polar surfaces (<span><math><mrow><mn>10</mn><mover><mn>1</mn><mo>‾</mo></mover><mn>1</mn></mrow></math></span>) and (<span><math><mrow><mn>10</mn><mover><mn>1</mn><mo>‾</mo></mover><mn>2</mn></mrow></math></span>) were ferromagnetic both without vacancies and with V<sub>Zn</sub>, the magnetism was caused by the spin polarization of unpaired electrons in the dangling bonds of surface atoms. The Zn-4<em>s</em> electrons originating from V<sub>O</sub> can pair with unpaired electrons in the dangling bonds, thereby reducing the magnetism of the polar surface. These findings contribute to a better understanding of the ferromagnetism induced by point defect and surface polarity in undoped ZnO, offering a theoretical foundation for its application in spintronic devices.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"404 ","pages":"Article 116064"},"PeriodicalIF":2.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of the electron-doping on the structural and magnetic properties of the Sr2−xCexFe1+x/2Mo1−x/2O6 double perovskite 电子掺杂对Sr2−xCexFe1+x/2Mo1−x/2O6双钙钛矿结构和磁性能的影响
IF 2.1 4区 物理与天体物理
Solid State Communications Pub Date : 2025-06-26 DOI: 10.1016/j.ssc.2025.116046
D.L. García-Ruíz , B. Aguilar , O. Navarro , J. de la Torre Medina , T.E. Soto , M. Cervantes-Solano
{"title":"Effects of the electron-doping on the structural and magnetic properties of the Sr2−xCexFe1+x/2Mo1−x/2O6 double perovskite","authors":"D.L. García-Ruíz ,&nbsp;B. Aguilar ,&nbsp;O. Navarro ,&nbsp;J. de la Torre Medina ,&nbsp;T.E. Soto ,&nbsp;M. Cervantes-Solano","doi":"10.1016/j.ssc.2025.116046","DOIUrl":"10.1016/j.ssc.2025.116046","url":null,"abstract":"<div><div>We report the structural, magnetic and magneto-transport properties of the new Ce-doped double perovskite Sr<span><math><msub><mrow></mrow><mrow><mn>2</mn><mo>−</mo><mi>x</mi></mrow></msub></math></span>Ce<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span>Fe<span><math><msub><mrow></mrow><mrow><mn>1</mn><mo>+</mo><mi>x</mi><mo>/</mo><mn>2</mn></mrow></msub></math></span>Mo<span><math><msub><mrow></mrow><mrow><mn>1</mn><mo>−</mo><mi>x</mi><mo>/</mo><mn>2</mn></mrow></msub></math></span>O<sub>6</sub> series with <span><math><mrow><mn>0</mn><mo>.</mo><mn>0</mn><mo>≤</mo><mi>x</mi><mo>≤</mo><mn>0</mn><mo>.</mo><mn>5</mn></mrow></math></span>, obtained by solid state reaction. The chemically homogeneous samples show a tetragonal to monoclinic crystallographic phase transition starting at <span><math><mrow><mi>x</mi><mo>=</mo></mrow></math></span> 0.3 and ending at <span><math><mrow><mi>x</mi><mo>=</mo></mrow></math></span> 0.35, which was confirmed by X-ray diffraction measurements and Rietveld refinements. The Curie temperature T<span><math><msub><mrow></mrow><mrow><mi>C</mi></mrow></msub></math></span> determined by magnetic susceptibility experiments, shows an initial decrease between the un-doped sample and <span><math><mrow><mi>x</mi><mo>=</mo></mrow></math></span> 0.05, followed by a general increase with doping, reaching a T<span><math><mrow><msub><mrow></mrow><mrow><mi>C</mi></mrow></msub><mo>=</mo></mrow></math></span> 427 K for <span><math><mrow><mi>x</mi><mo>=</mo></mrow></math></span> 0.5. A particular behavior close to the structural transition is observed. The electrical behavior is characterized by a rapid drop of the magnetoresistance ratio and a slight increase at small values of x attributable to electron injection, followed by a general decrease due principally to a controlled antisite disorder.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"404 ","pages":"Article 116046"},"PeriodicalIF":2.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of highly dense Ga-LLZO solid electrolyte pallet for All-Solid-State Battery using Machine Learning Approach 基于机器学习方法的全固态电池用高密度Ga-LLZO固体电解质托盘的研制
IF 2.1 4区 物理与天体物理
Solid State Communications Pub Date : 2025-06-26 DOI: 10.1016/j.ssc.2025.116038
Alok Kumar Chaudhary
{"title":"Development of highly dense Ga-LLZO solid electrolyte pallet for All-Solid-State Battery using Machine Learning Approach","authors":"Alok Kumar Chaudhary","doi":"10.1016/j.ssc.2025.116038","DOIUrl":"10.1016/j.ssc.2025.116038","url":null,"abstract":"<div><div>Oxide-based Solid electrolytes require high-temperature sintering (<span><math><mo>&gt;</mo></math></span>1200 °C) for preferred densification to be used in All-Solid-State Batteries, which invites severe loss of lithium. While its Lower-temperature sintering results in less densification. Thus, its sintering process involves many contradictions and requires extensive trial and error. This study addresses this densification issue using a machine learning (ML) approach. Gallium-doped LLZO (Lithium Lanthanum Zirconium Oxide) pallets were sintered from room temperature to 1200 °C. Data from these sintering processes were used to train ML models with 1000 °C and 1100 °C datapoint using three ML algorithms: Artificial Neural Network (ANN), Support Vector Machine (SVM), and Gaussian Process Regression (GPR). The models were tested for shrinkage prediction accuracy up to 1200 °C. Validation showed all ML models predicted shrinkage with <span><math><mo>&lt;</mo></math></span>0.018 RMSE, aiding densification improvement. The 1100 °C GPR model had the highest accuracy with a 0.0007 RMSE, outperforming other models.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"404 ","pages":"Article 116038"},"PeriodicalIF":2.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144549255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular dynamics simulation of Cu-Al functional gradient alloys under tensile loading Cu-Al功能梯度合金拉伸载荷下的分子动力学模拟
IF 2.1 4区 物理与天体物理
Solid State Communications Pub Date : 2025-06-23 DOI: 10.1016/j.ssc.2025.116060
Jianwei Zhang , Qi Zhao , Lei Zhang Mr
{"title":"Molecular dynamics simulation of Cu-Al functional gradient alloys under tensile loading","authors":"Jianwei Zhang ,&nbsp;Qi Zhao ,&nbsp;Lei Zhang Mr","doi":"10.1016/j.ssc.2025.116060","DOIUrl":"10.1016/j.ssc.2025.116060","url":null,"abstract":"<div><div>Conventional research tools are difficult to reveal the relationship between nanoscale microstructural changes and macroscopic properties of functional gradient materials (FGMs), and it is not clear how the gradient composition distribution regulates the mechanical properties of alloys. To this end, the present study employed a molecular dynamics (MD) approach to systematically investigate the tensile mechanical response of Cu-Al gradient alloys with different compositional distribution functions (power-law, exponential and S-type) and to analyse the effects of strain rate and temperature on the mechanical properties of Cu-Al functional gradient alloys with S-type distribution functions. It is found that P-FGM is suitable for symmetric strengthening design, E-FGM is used for fast gradient response design, and S-FGM is outstanding in suppressing stress concentration. The S-shaped distribution function with different functional parameters can effectively delay the accumulation of dislocations and improve the deformation uniformity. As the gradient parameter p increases, the ultimate tensile strength (UTS) of the material tends to decrease and the time of the peak of dislocations is delayed, which is a phenomenon mainly attributed to the fact that the smooth gradient effectively disperses the stress concentration and reduces the risk of local failure. In addition, an increase in temperature leads to a gradual transformation of the FCC structure of Cu-Al alloys into an amorphous structure, resulting in a significant decrease in strength. While the increase in the velocity of the deformation can enhance the strength, it also causes a loss of elongation. This highlights the relationship between the enhancement of the velocity of deformation and the reduction of plasticity. The present study utilised molecular dynamics simulations to reveal the correlation between the degree of layering and the properties of plasticity. This provides a foundation for the design of functional layered alloys.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"404 ","pages":"Article 116060"},"PeriodicalIF":2.1,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spin-phonon coupling driven ferroelectricity and magneto-dielectric changes in multiferroic YMn2O5 多铁性YMn2O5中自旋声子耦合驱动的铁电性和磁介电性变化
IF 2.1 4区 物理与天体物理
Solid State Communications Pub Date : 2025-06-23 DOI: 10.1016/j.ssc.2025.116054
Pragati Sharma , Binoy Krishna De , Divya Jangra , Hemant Singh Kunwar , Abinash Tripathy , Arvind Kumar Yogi , R. Venkatesh , Rajeev Rawat , Dinesh K. Shukla , R. Mittal , Mayank K. Gupta , Praveen Kumar Velpula , Vasant G. Sathe
{"title":"Spin-phonon coupling driven ferroelectricity and magneto-dielectric changes in multiferroic YMn2O5","authors":"Pragati Sharma ,&nbsp;Binoy Krishna De ,&nbsp;Divya Jangra ,&nbsp;Hemant Singh Kunwar ,&nbsp;Abinash Tripathy ,&nbsp;Arvind Kumar Yogi ,&nbsp;R. Venkatesh ,&nbsp;Rajeev Rawat ,&nbsp;Dinesh K. Shukla ,&nbsp;R. Mittal ,&nbsp;Mayank K. Gupta ,&nbsp;Praveen Kumar Velpula ,&nbsp;Vasant G. Sathe","doi":"10.1016/j.ssc.2025.116054","DOIUrl":"10.1016/j.ssc.2025.116054","url":null,"abstract":"<div><div>The correlations between the magnetic, dielectric, and lattice degrees of freedom have been investigated utilizing Raman spectroscopy, magnetization, specific heat, and dielectric measurements under magnetic field in order to understand magnetoelectric and magneto-dielectric behaviour in YMn<sub>2</sub>O<sub>5</sub>. It is reported before that the RMn<sub>2</sub>O<sub>5</sub> family of compounds show colossal magneto-dielectric behaviour which is attributed to the unique commensurate-incommensurate magnetic transition shown by the system. In the present study the magnetization and specific heat studies revealed three magnetic transitions at <em>T</em><sub><em>N</em></sub> = 44 K, 41 K and 20 K along with a field-induced transition at 35 K under 12 T. Dielectric studies under magnetic field showed ∼1 % magneto-dielectric effects (MD) in the incommensurate spin order state below 20 K, and the MD becomes smaller in the commensurate magnetic state displayed in 20–41 K region. To elucidate the coupling between lattice dynamics and spin ordering, we performed temperature-dependent Raman spectroscopy, revealing clear signatures of spin-phonon coupling and lattice modulation at the three magnetic transitions. Density functional theory calculations are employed to estimate phonon frequencies and associated eigen displacements, demonstrating that only phonon modes with atomic displacements in the <em>ab</em> plane are significantly influenced by magnetic ordering and so, ferroelectricity. This finding highlights that Mn displacement associated with ferroelectric polarization is intrinsically linked to magnetic ordering through spin-phonon coupling, thereby driving magnetoelectric behaviour in YMn<sub>2</sub>O<sub>5</sub>.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"404 ","pages":"Article 116054"},"PeriodicalIF":2.1,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144510707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Excitonic and magneto-optical effects in Kagome monolayer Nb3X8 (X= Cl, Br, and I) Kagome单层Nb3X8 (X= Cl, Br,和I)的激子和磁光效应
IF 2.1 4区 物理与天体物理
Solid State Communications Pub Date : 2025-06-21 DOI: 10.1016/j.ssc.2025.116061
Mingju Shen
{"title":"Excitonic and magneto-optical effects in Kagome monolayer Nb3X8 (X= Cl, Br, and I)","authors":"Mingju Shen","doi":"10.1016/j.ssc.2025.116061","DOIUrl":"10.1016/j.ssc.2025.116061","url":null,"abstract":"<div><div>Kagome monolayers, prized for their unique physical properties, have emerged as promising candidates for the fabrication of advanced functional devices. Here, we investigate excitonic effects and the magneto-optical Kerr effect in monolayer Nb<sub>3</sub><em>X</em><sub>8</sub> (<em>X</em> = Cl, Br, I) by solving the Bethe-Salpeter equation on top of <em>GW</em>-corrected electronic structures. Our results reveal exceptionally high exciton binding energies in Nb<sub>3</sub><em>X</em><sub>8</sub>, exceeding those of transition metal dichalcogenides. Notably, Nb<sub>3</sub>Cl<sub>8</sub> exhibits a binding energy of up to 1.137 eV, with its exciton wavefunction highly localized within a unit cell. Additionally, the halogen atom significantly influences the amplitude of the Kerr spectrum, and excitonic effects shift its energy threshold. These findings provide valuable insights into potential applications in optical and magneto-optical devices.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"404 ","pages":"Article 116061"},"PeriodicalIF":2.1,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detection of air-decomposition products (CO, NOx) using Ag-doped MgCl2 monolayer 利用掺银MgCl2单层检测空气分解产物(CO, NOx)
IF 2.1 4区 物理与天体物理
Solid State Communications Pub Date : 2025-06-20 DOI: 10.1016/j.ssc.2025.116059
Yashasvi Naik, Disha Mehta, Riddhi Desai, P.B. Thakor
{"title":"Detection of air-decomposition products (CO, NOx) using Ag-doped MgCl2 monolayer","authors":"Yashasvi Naik,&nbsp;Disha Mehta,&nbsp;Riddhi Desai,&nbsp;P.B. Thakor","doi":"10.1016/j.ssc.2025.116059","DOIUrl":"10.1016/j.ssc.2025.116059","url":null,"abstract":"<div><div>To assess the operational reliability of air-insulated switchgear, the interaction of air decomposition products with sensing materials is investigated. This study focuses on the adsorption characteristics of Ag-doped MgCl<sub>2</sub> (Ag-MgCl<sub>2</sub>) toward three common byproducts - CO and NO<sub>x</sub> (X = 1, 2) using Density Functional Theory (DFT). Various parameters such as adsorption energy, charge transfer, projected density of states (PDOS), and recovery time are analyzed for both pristine MgCl<sub>2</sub> and Ag-MgCl<sub>2</sub> monolayers. Results reveal that the pristine MgCl<sub>2</sub> monolayer exhibits weak gas adsorption while the Ag-MgCl<sub>2</sub> monolayer shows strong interactions with all three gases. The adsorption process on Ag-MgCl<sub>2</sub> has reduces the band gap. Furthermore, the Ag-MgCl<sub>2</sub> monolayer demonstrates a fast recovery time for NO<sub>2</sub> which shows its potential for reusable gas sensing. Overall, the study provides theoretical insight into the feasibility of employing Ag-MgCl<sub>2</sub> monolayers in sensors designed for air insulation systems.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"404 ","pages":"Article 116059"},"PeriodicalIF":2.1,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ab-initio study of the structural, electronic, optical, and thermoelectric properties of chalcogenide-doped Sr2UZnO6 硫族化合物掺杂Sr2UZnO6的结构、电子、光学和热电性质的从头算研究
IF 2.1 4区 物理与天体物理
Solid State Communications Pub Date : 2025-06-20 DOI: 10.1016/j.ssc.2025.116024
Aya Chelh, Smahane Dahbi, Hamid Ez-Zahraouy
{"title":"Ab-initio study of the structural, electronic, optical, and thermoelectric properties of chalcogenide-doped Sr2UZnO6","authors":"Aya Chelh,&nbsp;Smahane Dahbi,&nbsp;Hamid Ez-Zahraouy","doi":"10.1016/j.ssc.2025.116024","DOIUrl":"10.1016/j.ssc.2025.116024","url":null,"abstract":"<div><div>The first principal calculation based on the Density Functional Theory (DFT) is utilized in order to investigate the structural, electrical, optical, and thermoelectric properties of pure as well as chalcogenes doped at oxygen position of Sr<sub>2</sub>UZnO<sub>6</sub>. Using the PBE-GGA + mBJ approximation, we found that the band gap values for pure Sr<sub>2</sub>UZnO<sub>6</sub> are 2.081 eV. Additionally, the compounds under study, Sr<sub>2</sub>UZnO<span><math><msub><mrow></mrow><mrow><mn>6</mn><mo>−</mo><mi>x</mi></mrow></msub></math></span>Y<span><math><msub><mrow></mrow><mrow><mi>x</mi></mrow></msub></math></span> (where Y = Te, Se, S, and x = 0.083), are p-type semiconductors with a direct band gap. Furthermore, the band gap decreased from 2.081 eV for pure Sr<sub>2</sub>UZnO<sub>6</sub> to 1.263 eV, 1.618 eV, and 1.486 eV for Sr<sub>2</sub>UZnO<sub>5.917</sub>Y<sub>0.083</sub> where Y = Te, Se, and S, respectively, following the substitution of chalcogen impurities on the oxygen site. In the visible range, the absorption can surpass <span><math><mrow><mn>2</mn><mo>.</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>5</mn></mrow></msup><mspace></mspace><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math></span> due to the lowering of the band gap, particularly for Te-doped Sr<sub>2</sub>UZnO<sub>6</sub>. Furthermore, every structure studied is thermodynamically stable based on the enthalpy of formation. Additionally, all of the investigated compounds’ electrical and thermal conductivities rose with temperature, and type P behavior is suggested by the positive Seebeck coefficient values. In light of all these findings, we anticipate that Sr<sub>2</sub>UZnO<sub>5.917</sub>Y<sub>0.083</sub> (Y = Te, Se, S) doped compounds will be used as semiconductors in photovoltaic and thermoelectric devices.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"404 ","pages":"Article 116024"},"PeriodicalIF":2.1,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Computational profiling of optical and NLO properties of diisopropylammonium perchlorate 高氯酸二异丙铵光学性质和NLO性质的计算分析
IF 2.1 4区 物理与天体物理
Solid State Communications Pub Date : 2025-06-20 DOI: 10.1016/j.ssc.2025.116058
Ekramul Kabir , Mamataj Khatun
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