Microstructure and electrical properties of Ni-Zn manganite ceramics

被引：18

作者：

Chanel, C ^{[1
]}

Guillemet-Fritsch, S ^{[1
]}

Sarrias, J ^{[1
]}

Rousset, A ^{[1
]}

机构：

[1] Univ Toulouse 3, Lab Chim Mat Inorgan & Energet, CNRS, UMR 5085, F-31062 Toulouse, France

来源：

INTERNATIONAL JOURNAL OF INORGANIC MATERIALS | 2000年 / 2卷 / 2-3期

关键词：

oxides; electronic materials; X-ray diffraction; electrical properties;

D O I：

10.1016/S1466-6049(00)00025-8

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Nickel zinc manganite ceramics Mn2.34Ni0.66ZnxO4 (0 less than or equal to x less than or equal to 1.02) were investigated using structure, microstructure and electrical property interrelationships. The resistivity increased with zinc content whereas the activation energy remained constant. The drift of resistivity under thermal constraint, commonly observed in NTC thermistors was almost nil when the zinc content was sufficiently high (x greater than or equal to 0.7). Homogeneous microstructures and high densities were obtained when the ceramics were prepared from fine powders. The Ni/Zn/Mn/O system prepared by 'chimie douce' has interesting NTC properties for industrial applications. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：241 / 247

页数：7

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