Structure, thermal stability and electrical properties of zinc manganites

被引：78

作者：

Guillemet-Fritsch, S

Chanel, C

Sarrias, J

Bayonne, S

Rousset, A

Alcobe, X

Sarriòn, MLM

机构：

[1] Univ Toulouse 3, Lab Chim Mat Inorgan & Energet, CNRS, ESA 5070, F-31062 Toulouse, France

[2] Univ Barcelona, Serv Cient Tecn, E-08028 Barcelona, Spain

[3] Univ Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Spain

来源：

SOLID STATE IONICS | 2000年 / 128卷 / 1-4期

关键词：

zinc manganite; spinel; NTC thermistor; oxidation; electrical resistivity;

D O I：

10.1016/S0167-2738(99)00340-9

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：

Zinc manganites ZnxMn3-xO4 were prepared by the thermal decomposition in air of oxalate precursors. The structure and the thermal stability of the oxides were determined and correlated with their electrical properties (resistivity, resistivity drift). The substitution of manganese by zinc in the spinel structure has a stabilizing effect against oxidation and phase transformation. The strong energetic Zn2+-O bonding slows down the cationic migration in the lattice. The zinc manganites are suited to high temperature NTC thermistors. The resistivity range is large and no ageing phenomenon is observed in the ceramics. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：233 / 242

页数：10

共 37 条

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