The Phase Transition and the Structures of Superionic Conductor Ag_3SBr
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概要
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The ordered phase concernitag the Ag distribtmtion of a superionic conductorAg.SBr was discovered below 128 K. The trazasition heat and the entropy changewere measured to be 0.23kcal/unol and 1.77ca1/mol'deg respectively. Thetransition is of the first order but is close to the: secouad order one. The>crystalstructures of the newly found 7-phase atad the ]"000l temperature /j-pha.se werestudied by a least-squares method using X-ray amxd neutron diffraction data. Thestructures of tire 7-phase and the /7-phase of Ag.S'Br were similar to those of PhaseIII and Phase I of CsPbCl. respectively. The sprtce group of the 7-phase may beDiX-Cmcm. The lattice constants 'of the 7-phas<>were measured to be a(:Z>)9.423:L0.008 A and c=9.711 i0.009 A at 118 K. The nature of the rhase transi-tion of AneSBr is discussed ira connection with tlaose of AS3SI and CsPbCls.
- 社団法人日本物理学会の論文
- 1980-08-15
著者
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Sakuma Takashi
Departmen Of Physics Faculty Of Science Ibaraki University
-
Hoshino Sadao
Institute For Solid State Phsics The University Of Tokyo
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Hoshino Sadao
Institute for Solid State Physics,The University of Tokyo
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