THE EFFECT OF IRON IONS ON THE DEFECT STRUCTURE OF LITHIUM-NIOBATE CRYSTALS GROWN FROM K2O CONTAINING MELTS

被引：32
|
作者：
MALOVICHKO, GI [1 ]
GRACHEV, VG [1 ]
SCHIRMER, OF [1 ]
机构：
[1] UNIV OSNABRUCK, FACHBEREICH PHYS, D-49069 OSNABRUCK, GERMANY
来源：
SOLID STATE COMMUNICATIONS | 1994年 / 89卷 / 03期
关键词：
D O I：
10.1016/0038-1098(94)90681-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The most narrow ESR linewidths possible for Fe-Li(3+) in nominally pure melts are observed in stoichiometric material obtained from growth out of melts containing K2O. We report that the addition of only 0.05 wt% Fe2O3 to the melt strongly increases the linewidths, pointing to a pronounced in influence of Fe on the defect structure of LiNbO3. Optical absorption studies show that Fe-Li(2+) exists in such crystals in higher concentrations than in conventional LiNbO3 even before reduction. This is attributed to the decreased content of intrinsic compensating defects, caused by K2O growth.
引用
收藏
页码：195 / 198
页数：4
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