Molar Heat Capacity of Potassium Alum KAl(SO4)(2) center dot 12H(2)O at Low Temperatures: Revisited with Determination of the Debye Temperature
DC Field | Value | Language |
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dc.contributor.author | Lee, Kwang-Sei | - |
dc.contributor.author | Lee, Cheol Eui | - |
dc.date.accessioned | 2021-09-02T15:55:09Z | - |
dc.date.available | 2021-09-02T15:55:09Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2018-02 | - |
dc.identifier.issn | 0374-4884 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/77868 | - |
dc.description.abstract | Two earlier published experimental data [C. H. Shomate, J. Am. Chem. Soc. 67, 765 (1945); D. G. Kapadnis and R. Hartmans, Physica 22, 173 (1956)] of the molar heat capacity C (p) of potassium alum, KAl(SO4)(2)center dot 12H(2)O, are revisited. From analysis of the temperature dependence of C (p) [D. G. Kapadnis and R. Hartmans, Physica 22, 173 (1956)] below 20 K by using the experimental values of C (p) represented as a plot of C (p) /T = gamma+AT (2), the Sommerfeld parameter gamma (electronic heat capacity coefficient) and the slope A (lattice heat capacity coefficient) are estimated as gamma = 0 JK (-2)mol (-1) and A = 3.35x10 (-3) JK (-4)mol (-1), respectively. This indicates that only acoustic phonons contribute to the heat capacity below 4 K. The Debye T (3)-law is found to hold good to 4 K, i.e., to T < theta (D) /20, where theta (D) is the calorimetric Debye temperature calculated as theta (D) = 83.4 K, indicative of the strength of the chemical bonding in the system. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | KOREAN PHYSICAL SOC | - |
dc.subject | SINGLE-CRYSTAL RAMAN | - |
dc.subject | ORIENTATIONAL DYNAMICS | - |
dc.subject | PHASE-TRANSITION | - |
dc.subject | ALPHA-ALUMS | - |
dc.subject | VIBRATIONS | - |
dc.subject | DISORDER | - |
dc.subject | SPECTRA | - |
dc.subject | IONS | - |
dc.title | Molar Heat Capacity of Potassium Alum KAl(SO4)(2) center dot 12H(2)O at Low Temperatures: Revisited with Determination of the Debye Temperature | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Cheol Eui | - |
dc.identifier.doi | 10.3938/jkps.72.379 | - |
dc.identifier.scopusid | 2-s2.0-85041549247 | - |
dc.identifier.wosid | 000424690700009 | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.72, no.3, pp.379 - 383 | - |
dc.relation.isPartOf | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | - |
dc.citation.title | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | - |
dc.citation.volume | 72 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 379 | - |
dc.citation.endPage | 383 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.identifier.kciid | ART002314593 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Multidisciplinary | - |
dc.subject.keywordPlus | SINGLE-CRYSTAL RAMAN | - |
dc.subject.keywordPlus | ORIENTATIONAL DYNAMICS | - |
dc.subject.keywordPlus | PHASE-TRANSITION | - |
dc.subject.keywordPlus | ALPHA-ALUMS | - |
dc.subject.keywordPlus | VIBRATIONS | - |
dc.subject.keywordPlus | DISORDER | - |
dc.subject.keywordPlus | SPECTRA | - |
dc.subject.keywordPlus | IONS | - |
dc.subject.keywordAuthor | Potassium alum | - |
dc.subject.keywordAuthor | Heat capacity | - |
dc.subject.keywordAuthor | Debye temperature | - |
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