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Model of Heat Capacity in Volume Dimension
Tang, MB; Liu, XC; Zhang, MH; Pan, XH; Wen, HQ
2020-07-23
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
ISSN1089-5639
Issue29Pages:6119
SubtypeArticle
AbstractHeat capacity is an important and fundamental thermodynamic parameter in materials. The temperature-dependent heat capacity (HC) was studied extensively. Here, the universal correlation between the experimental heat capacity C-p and the coefficient of thermal expansion beta in reference solids at high temperatures: C-p = C-o + E beta (C-0 and E: constants) and the volume-dependent heat capacity C-TE in the temperature range from several Kelvins to melting temperatures is quantitatively determined: C-TE = E beta and a new phenomenological model of the experimental heat capacity below the melting temperature in the volume dimension is established: C-p = C-T + C-TE(the non-volume-dependent heat capacity C-T = C(0)f(D), f(D): Debye function). Previous harmonic and anharmonic HC models explain the HC at low temperatures and high temperatures, respectively. The new model successfully explains the HC at the whole temperature range below the melting temperature and quantitatively determines the change behavior of the temperature and volume in solids after absorbing the heat.
DOI10.1021/acs.jpca.0c05729
WOS KeywordTHERMAL-EXPANSION ; TEMPERATURE ; SOLIDS ; CONSTANT
Language英语
WOS Research AreaChemistry ; Physics
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27892
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Tang, MB,Liu, XC,Zhang, MH,et al. Model of Heat Capacity in Volume Dimension[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2020(29):6119.
APA Tang, MB,Liu, XC,Zhang, MH,Pan, XH,&Wen, HQ.(2020).Model of Heat Capacity in Volume Dimension.JOURNAL OF PHYSICAL CHEMISTRY A(29),6119.
MLA Tang, MB,et al."Model of Heat Capacity in Volume Dimension".JOURNAL OF PHYSICAL CHEMISTRY A .29(2020):6119.
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