Structural Study of α-β Phase Transition in K_2ZnBr_4
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概要
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The mechanism of the α-β transition in K_2ZnBr_4 is investigated by means of an X-ray structural study. The transition is a first-order one accompanied with a large amount of atomic displacements. The relation between the unit cell orientations of a and β phases can not be explained by an ordinal method applicable to the second order phase transition in orthorhombic Rb_2ZnCl_4-group crystals. In order to explain the α-β transition, intermediate body-centered cubic and hexagonal closed-packed structures are considered as virtual states between α and β phases. This virtual intermediate states (VIS) model gives us a good explanation for the change of the cell orientation and also for the large atomic displacements caused by the transition.
- 社団法人日本物理学会の論文
- 1994-07-15
著者
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Takesada Masaki
Department of Physics, School of Science, Hokkaido University
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MASHIYAMA Hiroyuki
Department of Physics,Faculty of Science,Yamaguchi University
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Mashiyama Hiroyuki
Department Of Physics Biology And Informatics Faculty Of Science Yamaguchi University
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Mashiyama Hiroyuki
Department Of Physics Yamaguchi University
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Takesada Masaki
Department Of Physics Faculty Of Science Yamaguchi University
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Takesada Masaki
Department Of Physics Yamaguchi University
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