J. Phys. Soc. Jpn. 45, pp. 705-706 (1978) [2 Pages]
LETTERS
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Received June 9, 1978
The ordered phase concerning the Ag distribution of superionic conductor Ag 3 SI was discovered below 157 K. The transition heat and the entropy change were measured to be 0.23 kcal/mol and 1.44 cal/mol.deg. respectively. The crystal structure of the newly found γ-phase was studied by X-ray diffraction method. The space group of the γ-phase may be C 4 3 –R3 and the transition to the β-phase is of first order but is very close to the second order one.
©1978 The Physical Society of Japan
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