GROWTH OF LARGE SINGLE-CRYSTALS OF BA1-XCAXTIO3, AND THEIR CHARACTERIZATION

被引：3

作者：

BALAKUMAR, S

ILANGOVAN, R

SUBRAMANIAN, C

RAMASAMY, P

机构：

[1] Crystal Growth Centre, Anna University, Madras

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1994年 / 37卷 / 01期

关键词：

D O I：

10.1016/0254-0584(94)90075-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Large optical quality Ba1-xCaxTiO3 single crystals have been grown using a flux technique with very slow cooling rates. Growth conditions were optimized with higher concentrations of Ca (above 16 mol.%). The formation of 'cake' or 'excess' twinned particles at the bottom of the crucible was completely absent for higher calcium content. A layer growth mechanism was observed on twinned and rectangular crystals. Lattice parameters decreased with increasing calcium content, and the room temperature dielectric constant was found to decrease compared to that of pure BaTiO3.

引用

页码：82 / 85

页数：4

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