New negative temperature coefficient thermistor ceramics in (Y2O3 + CeO2)-LaCr0.5Mn0.5O3 composite system
Zhao, Qing; Zhang, Bo; Yao, Jincheng; Zhao, Pengjun; Chang, Aimin
2014
Source PublicationJOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
ISSN0957-4522
Volume25Issue:7Pages:3023-3027
Abstract

A new series of composite, negative temperature coefficient (NTC) ceramics based on the (aY2O3 + bCeO2)-0.4LaCr 0.5Mn0.5O3 (a + b = 0.6) were carefully prepared and related electrical properties were investigated. All the NTC thermistors showed a linear relationship between the natural logarithm of the resistance and the reciprocal of the absolute temperature, indicative of NTC characteristics. The obtained B 25/85 constants were in range of 2,100-2,700 K. The magnitude order of the resistivity at 25 °C was of 103-109 Ωcm and activation energies varied from 0.185 to 0.231 eV. The aging coefficient of the NTC thermistors with CeO 2 was less than 2 % for the time period of 900 h, suggesting that NTC thermistors with CeO2 possessed a better electrical stability in comparison with CeO2-free thermistors.

DOI10.1007/s10854-014-1977-0
Indexed BySCI
WOS IDWOS:000337167900028
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/3766
Collection中国科学院特殊环境功能材料与器件重点试验室
材料物理与化学研究室
AffiliationChinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Xinjiang Key Lab Elect Informat Mat & Devices, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China; Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Qing,Zhang, Bo,Yao, Jincheng,et al. New negative temperature coefficient thermistor ceramics in (Y2O3 + CeO2)-LaCr0.5Mn0.5O3 composite system[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2014,25(7):3023-3027.
APA Zhao, Qing,Zhang, Bo,Yao, Jincheng,Zhao, Pengjun,&Chang, Aimin.(2014).New negative temperature coefficient thermistor ceramics in (Y2O3 + CeO2)-LaCr0.5Mn0.5O3 composite system.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,25(7),3023-3027.
MLA Zhao, Qing,et al."New negative temperature coefficient thermistor ceramics in (Y2O3 + CeO2)-LaCr0.5Mn0.5O3 composite system".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 25.7(2014):3023-3027.
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