Structural Study of Phase Transition in K_2Co_2(SO_4)_3 Crystals
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概要
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Crystal structure of K_2Co_2(SO_4)_3 was determined at nine temperatures in the high-temperature cubic phase. In contrast to the early structural study, the split-atom calculation concludes that the SO_4 ion has a number of equilibrium arrangements. Mean-square atomic displacements become large with approaching the phase transition temperature despite no soft mode has been found. Atomic distances between Co and O are fairly shorter than the normal distance in the average structure. We explain these results by assuming that the nuclei of the low-temperature phase have already been generated in the cubic phase.
- 社団法人日本物理学会の論文
- 1995-12-15
著者
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HIKITA Tomoyuki
Department of Applied Physics,Faculty of Engineering,Tohoku University
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Moriyoshi Chikako
Department Of Materials Science Faculty Of Science Hiroshima University
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Hikita Tomoyuki
Department Of Applied Physics Faculty Of Engineering Tohoku University
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ITOH Kazuyuki
Department of Biology, Osaka Medical Center for Cancer and Cardiovascular Diseases
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Itoh Kazuyuki
Department Of Biology Osaka Medical Center For Cancer And Cardiovascular Diseases
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Moriyoshi Chikako
Department of Materials Science, Faculty of Science, Hiroshima University
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