{"title":"Modeling the Size Dependence of Specific Heat Capacity and Thermal Expansion Coefficient of Metallic Nanocrystals","authors":"Hongchao Sheng, Beibei Xiao, Xiaobao Jiang","doi":"10.1134/S1063783424600808","DOIUrl":null,"url":null,"abstract":"<p>At mesoscale, materials always exhibit a variety of novel properties that are completely different from those of bulk. In this work, the size (<i>D</i>) dependence functions of specific heat capacity <i>C</i><sub>p</sub>(<i>D</i>) and thermal expansion coefficient α(<i>D</i>) for metallic nanocrystals is built. The proposed model shows a good agreement as compared with the available experimental an simulation data of metal nanocrystals. Both <i>C</i><sub>p</sub>(<i>D</i>) and α(<i>D</i>) increase following the drop of <i>D</i>. In addition, it is found that the ratio of the solid/liquid interface energy γ<sub>sl</sub> to surface stress <i>f</i> dominate the size dependence of <i>C</i><sub>p</sub>(<i>D</i>) and α(<i>D</i>), and this influence of γ<sub>sl</sub>/<i>f</i> on <i>C</i><sub>p</sub>(<i>D</i>) and α(<i>D</i>) become greater as <i>D</i> decrease.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"66 9","pages":"313 - 317"},"PeriodicalIF":0.9000,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of the Solid State","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063783424600808","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
引用次数: 0
Abstract
At mesoscale, materials always exhibit a variety of novel properties that are completely different from those of bulk. In this work, the size (D) dependence functions of specific heat capacity Cp(D) and thermal expansion coefficient α(D) for metallic nanocrystals is built. The proposed model shows a good agreement as compared with the available experimental an simulation data of metal nanocrystals. Both Cp(D) and α(D) increase following the drop of D. In addition, it is found that the ratio of the solid/liquid interface energy γsl to surface stress f dominate the size dependence of Cp(D) and α(D), and this influence of γsl/f on Cp(D) and α(D) become greater as D decrease.
期刊介绍:
Presents the latest results from Russia’s leading researchers in condensed matter physics at the Russian Academy of Sciences and other prestigious institutions. Covers all areas of solid state physics including solid state optics, solid state acoustics, electronic and vibrational spectra, phase transitions, ferroelectricity, magnetism, and superconductivity. Also presents review papers on the most important problems in solid state physics.