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题名: New negative temperature coefficient thermistor ceramics in (Y2O3 + CeO2)-LaCr0.5Mn0.5O3 composite system
作者: Zhao, Qing; Zhang, Bo; Yao, Jincheng; Zhao, Pengjun; Chang, Aimin
通讯作者: Chang, AM
刊名: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
发表日期: 2014
DOI: 10.1007/s10854-014-1977-0
卷: 25, 期:7, 页:3023-3027
收录类别: SCI
摘要: 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.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3766
Appears in Collections:中国科学院特殊环境功能材料与器件重点试验室_期刊论文

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作者单位: Chinese 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:
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.
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文件名: New negative temperature coefficient thermistor ceramics in (Y2O3 + CeO2)-LaCr0.5Mn0.5O3 composite system.pdf
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