DIFFUSION OF ALUMINUM, SCANDIUM AND GALLIUM IONS INTO LITHIUM-NIOBATE SINGLE-CRYSTALS

被引：0
作者：
HANEDA, H
YAMAMOTO, JK
KITAMURA, K
KIMURA, S
机构：
来源：
NIPPON SERAMIKKUSU KYOKAI GAKUJUTSU RONBUNSHI-JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 1993年 / 101卷 / 01期
关键词：
LITHIUM NIOBATE; DIFFUSION; IMPURITY; STOICHIOMETRY; DEFECT STRUCTURE; ALUMINUM; GALLIUM; SCANDIUM;
D O I：
暂无
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Diffusion of aluminum, scandium and gallium ions in single crystals has been studied. Stoichiometric crystals have been grown by the Czochralski method using a double crucible and automatic powder supply system. Diffusant concentration profiles were measured by secondary ion mass spectrometry. The diffusivities of all ions depended on the Li/Nb ratio of single crystals. The diffusion coefficients were larger in the samples with lithium deficient composition than in that with stoichiometric composition. This behavior was explained by a cation vacancy model in the lithium niobate lattice.
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页码：121 / 123
页数：3
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