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- Hayashi Hidemitsu
- The Institute for Solid State Physics, The University of Tokyo
書誌事項
- タイトル別名
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- Theory of the Superionic Transition in
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説明
The direct transition from the γ-phase to the α-phase in CuI, the superionic transition, is studied in terms of the dependence of the free energy on the order parameter and temperature. The average structure of the α-phase is expressed by a microcrystalline model to take into account the Cu+–Cu+ Coulomb correlation. The formation energy of microcrystals is expressed as the surface energy, and calculated from the interionic interaction, which consists of Vashishta-Rahman’s potential and nearest neighbour covalent bond. Anharmonic vibration of Cu+ is described by Einstein model with cubic anharmonicity. The transition entropy comes from the configuration of microcrystals and increase of thermal vibration of Cu+ on a microcrystal surface. The calculated transition entropy and energy per ion pair are 1.4 kB and 0.11 eV, respectively, which are close to the observed values.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 51 (3), 811-817, 1982
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204182953728
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- NII論文ID
- 110001965662
- 130003897383
- 210000090581
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- NII書誌ID
- AA00704814
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- BIBCODE
- 1982JPSJ...51..811H
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- COI
- 1:CAS:528:DyaL38XhslagtbY%3D
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 2441326
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- 本文言語コード
- en
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