Growth of KY(WO4)2 single crystal:: investigation of the WO3 rich region in the K2O-Y2O3-WO3 ternary system.: 2 -: The KY(WO4)2 crystallisation field

被引：15

作者：

Gallucci, E ^{[1
]}

Goutaudier, C ^{[1
]}

Boulon, G ^{[1
]}

Cohen-Adad, MT ^{[1
]}

机构：

[1] Univ Lyon 1, Lab Physicochim Mat Luminescents, CNRS, UMR 5620, F-69622 Villeurbanne, France

来源：

EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY | 1998年 / 35卷 / 6-7期

关键词：

D O I：

10.1016/S0992-4361(98)80021-0

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In order to determinate the best crystal growth conditions for KY(WO4)(2) single-crystals, the investigation of the K2O-Y2O3-WO3 ternary system was undertaken by the study of three isoplethic sections (K2W4O13-Y2O3, K2WO4-KY(WO4)(2), K2W2O7-KY(WO4)(2)). The stability domain and the crystallisation field of the compound were then defined : KY(WO4)(2) is not stoichiometric and melts congruently for the composition 0.81(K2O.4WO(3))-0.19Y(2)O(3) The low temperature phase belongs to the monoclinic system (s.g. C2/c) with a=10.65(1) Angstrom, b=10.34(1)Angstrom, c=7.54(1)Angstrom, beta=130.5(1)degrees. Its crystallisation field was delimited in temperature and composition : an alpha-KY(WO4)(2) crystal can grow if X(Y2O3)less than or equal to 0.175.

引用

页码：433 / 445

页数：13

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