Crystal growth and low coercive field 180° domain switching characteristics of stoichiometric LiTaO3

被引：237

作者：

Kitamura, K

Furukawa, Y

Niwa, K

Gopalan, V

Mitchell, TE

机构：

[1] Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 3050044, Japan

[2] NGK Spark Plug Co Ltd, Komaki 4858510, Japan

[3] Univ Calif Los Alamos Natl Lab, Ctr Mat Sci, Los Alamos, NM 87545 USA

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 21期

关键词：

D O I：

10.1063/1.122676

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We grew LiTaO3 single crystals with a composition close to stoichiometry by using a double crucible Czochralski method. The switching field required for 180 degrees ferroelectric domain reversal and the internal fields originating from nonstoichiometric point defects were compared for the stoichiometric and conventional commercially available crystals. The switching fields for the domain reversal in the stoichiometric crystal with a Curie temperature of 685 degrees C was 1.7 kV/mm. This is about one thirteenth of the switching field required for the conventional LiTaO3 crystals with a Curie temperature near 600 degrees C. The internal field in the stoichiometric crystal drastically decreased to 0.1 kV/mm. (C) 1998 American Institute of Physics. [S0003-6951(98)00847-X].

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页码：3073 / 3075

页数：3

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