Structural Study of Successive Phase Transition in[N (CH_3)_4]_2NiCl_4
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概要
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The crystal structure of [N(CH,).].NiCl. was in'vestigated at 23'C in phase I (nor-mat phase), at - 5'C in phase III (commensurate phase) and at - 60'C in phase IV(normal phase) by means of X-ray diffraction. I'he least-squares calculations con-verged at R = 0.043 for phase I, at R = 0.047 for phase III and at R = 0.036 for phaseIV, respectively. It was revealed that each tetrahedral Jon is in disorder in phase I. Inphase III, the position of eacFn molecule almost coincides with one of two disorderedsites in phase I. It was confirmed in phase IV that the rotating direction of eachmolecule about the axis parallel to the 6-axis is in-phase and the rotation angle ofNiCl: tetrahedron is about two times larger than that in phase I.[tetramethylammonium tetrachloronickelate, crystal structure, X-ray diffraction, ]l phase transitionl
- 社団法人日本物理学会の論文
- 1989-09-15
著者
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KASANO Hironobu
Department of Physics,School of Science
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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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Kasano Hironobu
Department Of Physics Faculty Of Science Yamaguchi University
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