Compositional variation in 0.65 PbMg2/3Nb1/3O3-0.35 PbTiO3 single crystals grown by high temperature solution growth technique

被引：11

作者：

Bhaumik, I. ^{[1
]}

Singh, G.

Ganesamoorthy, S.

Karnal, A. K.

Tiwari, M. K.

Tiwari, V. S.

机构：

[1] Raja Ramanna Ctr Adv Technol, Laser Mat Dev & Devices Div, Indore 452013, India

[2] Raja Ramanna Ctr Adv Technol, Synchrotron Utilisat Div, Indore 452013, India

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 2007年 / 42卷 / 04期

关键词：

ferroelectrics; dielectric response; PMN-PT; flux growth;

D O I：

10.1002/crat.200610828

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Single crystals of lead magnesium niobate titanate, 0.65 PbMg2/3Nb1/3O3 (PMN) -0.35PbTiO(3) (PT) were grown using flux method near morphotropic phase boundary (MPB) composition. The crystals grown at the centre of the platinum crucible were found to PT deficient compared to those grown near the walls of the crucibles. A variation of similar to 3.8mol% in PT concentration was found in the crystals grown at the wall and at the centre of the crucible. The difference in the chemical composition of crystals grown at the centre and the near the wall of the crucible was observed by X-ray diffraction, EDXRF, dielectric and thermal measurements. The presence of PT rich and deficient crystals is explained in terms of the segregation coefficient of PT in PMN. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：356 / 360

页数：5

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