Preparation and electrical properties of Ni0.6Mn2.4-xSnxO4 NTC ceramics

被引：17

作者：

Wang, Zhongbing ^{[1
]}

Li, Zhenbo ^{[1
]}

Zhang, Yi ^{[1
]}

Zhang, Ruyian ^{[1
]}

Qin, Pan ^{[1
]}

Chen, Chunnian ^{[1
]}

Winnubst, Louis ^{[2
]}

机构：

[1] Hefei Univ Technol, Anhui Key Lab Controllable Chem React & Mat Chem, Sch Chem Engn, Hefei 230009, Anhui, Peoples R China

[2] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 03期

关键词：

Electrical properties; Spinel; NTC; X-ray diffraction; INFRARED-SPECTRA; MICROSTRUCTURE;

D O I：

10.1016/j.ceramint.2013.09.037

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：

In this paper spinel-type negative temperature coefficient (NTC) ceramic materials with general composition Ni0.6Mn2.4-xSnxO4 (x=0.1, 0.2, 0.3, 0.4 and 0.5) were investigated. Powders were prepared by a solid-state reaction method and it was shown that the calcination temperature necessary for formation of the spinel phase as well as the lattice parameter increased with increasing Sn content (x). The specific resistivity at 25 degrees C and the B value of the ceramics increased sharply by adding more Sn. This increase was correlated with the distribution of the Sn4+ ions on the B-sites of the spinel lattice. The materials studied in this work are promising systems for NTC ceramics because of their high resistivity and B values. Crown Copyright (C) 2013 Published by Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：4875 / 4878

页数：4

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