Thermal Conductivity of SrTiO_3, KTaO_3 and BaTiO_3 near the Curie Points
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概要
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The thermal conductivity λnear the Curie points of SrTiO_3, KTaO_3 and BaTiO_3 is studied theoretically. The following results are obtained. (1) In SrTiO_3 λ decreases gradually in the high temperature region (about T^<-0.5>) and has a sharp decrease in the lower temperature side of the Curie point (32K). (2) In KTaO_3 λ decreases as T^<-1> in the high temperature side of T_<max>∼30K, whereas it decreases sharply in low temperatures; T_<max> being the temperature of maximum λ. (3) For BaTiO_3 a dip near the Curie point (391K) in the λ-T curve is derived. These features are in accord with recent experiments.
- 社団法人日本物理学会の論文
- 1971-07-05
著者
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Tani Kensuke
Department Of Chemistry Faculty Of Science Kyoto University
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Takemura Makoto
Department Of Chemistry Graduate School Of Science Osaka City University
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