Phase diagrams of the SrF2(Y,Ln)F3 systems part I.—X-ray characteristics of phases |
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| Authors: | BP Sobolev KB Seiranian LS Garashina PP Fedorov |
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| Institution: | 1. Institute of Crystallography, Academy of Sciences of the U.S.S.R., Moscow, U.S.S.R.;1. Erevan State University, Erevan, U.S.S.R. |
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| Abstract: | 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. |
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