ELECTRONIC-PROPERTIES OF GRAIN-BOUNDARIES IN SRTIO3 AND BATIO3 CERAMICS

被引：98

作者：

WASER, R

机构：

[1] Aachen University of Technology

来源：

SOLID STATE IONICS | 1995年 / 75卷

关键词：

GRAIN BOUNDARIES; SPACE CHARGE LAYER; IMPEDANCE SPECTROSCOPY; ACCEPTOR; TITANATE;

D O I：

10.1016/0167-2738(94)00152-I

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The grain boundary space charge depletion layer in acceptor-doped SrTiO3 and BaTiO3 ceramics is investigated by an impedance analysis in the time domain and is described in terms of a simplified back-to-back double Schottky barrier model. A numerical simulation is employed to analyze the defect chemistry in the depletion layer and to elaborate a refined Schottky model. The local distribution of the donor-type grain boundary states causing the depletion layer and the resulting band bending are discussed.

引用

页码：89 / 99

页数：11

共 40 条

[1] STUDY OF SOLID ELECTROLYTE POLARIZATION BY A COMPLEX ADMITTANCE METHOD [J].