X-ray diffractometric study and electrophysical properties of phases in the CaTa2O6-NdTa3O9 system

被引：1

作者：

Pivovarova, AP ^{[1
]}

Strakhov, VI ^{[1
]}

Smirnov, YN ^{[1
]}

机构：

[1] St Petersburg Tech Univ, St Petersburg State Technol Inst, St Petersburg, Russia

来源：

REFRACTORIES AND INDUSTRIAL CERAMICS | 2000年 / 41卷 / 9-10期

关键词：

Polymer; Electrical Conductivity; Solid Solution; Dielectric Constant; Diffraction Analysis;

D O I：

10.1023/A:1011360418213

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：

The method of x-ray diffraction analysis is used for studying phase formation in the CaTa2O6 - NdTa3O9 system at up to 1400 degreesC. It is shown that there exists a region of solid solutions of a rhombic crystal system based on NdTa3O9, the boundary of homogeneity of which lies at up to 40 mol.% CaTa2O6. Specimens of the studied solid solutions possess an elevated dielectric constant (epsilon similar to 50 at room temperature). The temperature dependences of the electrical conductivity and the dielectric constants of the solid solutions in the range 20 - 450 degreesC show that the polarization has a relaxation nature.

引用

页码：313 / 315

页数：3