PHASE-DIAGRAMS OF THE SRF2-(Y,LN)F3 SYSTEMS .1. X-RAY-CHARACTERISTICS OF PHASES

被引:81
作者
SOBOLEV, BP [1 ]
SEIRANIAN, KB [1 ]
GARASHINA, LS [1 ]
FEDOROV, PP [1 ]
机构
[1] ACAD SCI USSR,INST CRYSTALLOG,MOSCOW V-71,USSR
关键词
D O I
10.1016/0022-4596(79)90057-4
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The phase equilibria in the subsolidus part of 14 binary systems of SrF2(Y, Ln)F3 type (Ln-all lanthanides except Pm and Eu) were studied at temperatures over 850°C in equilibrated and quenched specimens by the X-ray analysis method. The oxygen concentration in the specimens before and after the thermal treatment was checked. The crystallographic characteristics of phases formed in the systems i.e. nonstoichiometric phases Sr1-xLnxF2+x with fluorite type structure, phases with fluorite derived type structure, nonstochiometric phases Ln1-ySryF3-y with tysonite (LaF3) type structure are given in this paper. © 1979.
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页码:51 / 58
页数:8
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