Structural phase transitions in KCdF3 and K0.5Rb0.5CdF3 |
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| Authors: | M Hidaka Z Y Zhou S Yamashita |
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| Institution: | 1. Department of Physics , Kyushu University , 33, Fukuoka, Japan;2. Faculty of Education , Oita University , Oita, Japan |
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| Abstract: | Successive structural transitions of KCdF3 and K0.5Rb0.5CdF3 have been studied by means of thermal diffusivity, polarized light scattering and X-ray diffraction. It is found that transitions occur at about 460 K and 475 K in KCdF3, and at 222 K, 232 K, 250 K, 258 K and 268 K in K0.5Rb0.5CdF3. The partial exchange between K+ and Rb+ ions gives rise to simultaneous condensation of the Mz 3 and Rx 25 soft phonons. |
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| Keywords: | Author please supply |
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