Theory of the Specific Heat of Graphite II

書誌事項

公開日
1955
DOI
  • 10.1143/jpsj.10.346
公開者
一般社団法人 日本物理学会

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説明

The previous theory by the author and Nagamiya (1951) is improved in this paper by introducing the shearing elastic constant c44, which is estimated by a procedure similar to that employed by Brennan. This shearing elastic constant couples the two types of vibrations, those normal to the hexagonal layers and those parallel. The theory shows that below 10°K the deviation from T2 law becomes appreciable and the range of transition from T2 to T3 laws appears at a few degrees absolute. The calculated values agree with the experimental ones over the whole temperature range below 60°K. Comments are given on recent other theories.

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