RARE EARTH ORTHOGALLATES

被引:87
作者
MAREZIO, M
REMEIKA, JP
DERNIER, PD
机构
[1] Bell Telephone Laboratories, Inc., Murray Hill
关键词
D O I
10.1021/ic50065a017
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Single crystals of the rare earth orthogallates, REGaO3 with RE = Sm-Lu, have been synthesized by the decomposition of the respective garnets at high pressure in the presence of a flux. Previously reported crystals of LaGaO3, PrGaO3, and NdGaO3 have been prepared by the flux method at atmospheric pressure. The rare earth orthogallates are isostructural with the rare earth orthoferrites; namely, they have the orthorhombic perovskite-like structure. Their lattice parameters have been calculated by the least-squares method. The parameters a and c increase smoothly in going from Lu to La. However, the lattice parameter b goes through a maximum. It seems that this anomalous variation of the b parameter can be explained in terms of a variation of the coordination number of the rare earth cation. © 1968, American Chemical Society. All rights reserved.
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页码:1337 / &
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