Structural defects of Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals grown by a Bridgman method

被引：44

作者：

Xu, GS ^{[1
]}

Luo, HS ^{[1
]}

Xu, HQ ^{[1
]}

Qi, ZY ^{[1
]}

Wang, PC ^{[1
]}

Zhong, WH ^{[1
]}

Yin, ZW ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Lab Funct Inorgan Mat, Shanghai 201800, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2001年 / 222卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

PMNT; piezocrystals; structural defects; crystal perfection; Bridgman method;

D O I：

10.1016/S0022-0248(00)00917-9

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

bThe types, formation mechanism and suppressing approaches of structural defects in PMNT crystals grown by a Bridgman method were investigated in this paper. The structural defects include composition non-uniformity, scattering particles, pores, negative crystal structures, cellular structures, fissure structures and point defects. They are formed due to one or several of the following: composition deviation, incomplete melting and diffusion, high-temperature volatilization, temperature fluctuation and instability of the position and shape of growth interfaces. On understanding the formation mechanism of structural defects, one can restrain them by means of adjusting stoichiometry of starting materials, using PMNT crystal bulks, suppressing composition volatilization and modifying growth parameters. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：202 / 208

页数：7

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