Optical birefringence study of the ferroelectric phase transition in lithium niobate tantalate mixed crystals:: LiNb1-xTaxO3

被引：41

作者：

Wood, I. G. ^{[1
]}

Daniels, P. ^{[1
]}

Brown, R. H. ^{[1
]}

Glazer, A. M. ^{[1
]}

机构：

[1] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 23期

关键词：

D O I：

10.1088/0953-8984/20/23/235237

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The optical birefringence of a complete solid-solution series of lithium niobate-tantalate crystals has been measured as a function of temperature. It is found that, irrespective of composition, the high-temperature paraelectric phase has a birefringence close to +0.063, suggesting that this value arises purely from the oxygen octahedra in the crystal structure. It is also observed that a small addition of lithium niobate to the tantalate produces a crystal that has zero birefringence at room temperature.

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页数：5

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