Growth and properties of CaTiO3 single crystal fibers

被引：17

作者：

Jiang, YJ ^{[1
]}

Guo, RY ^{[1
]}

Bhalla, AS ^{[1
]}

机构：

[1] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA

来源：

JOURNAL OF ELECTROCERAMICS | 1998年 / 2卷 / 03期

关键词：

calcium titanate; single crystal growth; dielectric properties; thermal expansion; twin;

D O I：

10.1023/A:1009978901009

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Single crystal fibers of CaTiO3 have been grown by the Laser Heated Pedestal Growth (LHPG) method up to several cm in length with diameters of 500-700 mu m. The crystals, characterized by X-ray diffraction analysis, have the distorted orthorhombic perovskite structure. Dielectric constant, dielectric loss and temperature coefficient of resonant frequency along the [101](o) and [010](o) (o means orthorhombic unit cell) direction of the crystal were investigated over the temperature range from -250 degrees C to 100 degrees C, The results of thermal expansion measurements up to 850 degrees C reveal no unusual behavior associated with phase transitions. One of the modes of twinning reported by Bowman from optical analysis is confirmed by optical microscopy.

引用

页码：199 / 203

页数：5

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