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题名: rare earth and perovskite composite ceramics applied for the thermistor in wide temperature range
作者: Zhang Bo ; Zhao Qing ; Chang Aimin ; Zhao Pengjun ; Guan Fang
会议文集: Key Engineering Materials
会议名称: 7th China International Conference on High-Performance Ceramics, CICC-7
会议日期: November 4, 2011 - November 7, 2011
出版日期: 2012
会议地点: Xiamen, China
出版地: Switzerland
收录类别: ei
ISSN: 10139826
ISBN: 9783037854259
部门归属: (1) Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry, CAS, Urumqi 830011, China; (2) Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China
英文摘要: Different compositions (AY2O3+BCeO 2)-0.4YCr0.5Mn0.5O3 (A+B=0.6) were prepared via a conventional solid-state reaction at 1200°C, and sintered under air atmosphere at 1600°C. XRD patterns analysis has revealed that for 02O3, CeO2 and orthorhombic perovskite YCr 0.5Mn0.5O3 phase, respectively. SEM and EDAX observations confirm the obtaining of three-phased composite ceramics. The brighter regions are the Y2O3 and CeO2 phase, whereas the darker are perovskite phase. All the NTC thermistors prepared show a similar linear relationship between the ln of the resistance and the reciprocal of the absolute temperature, indicative of NTC characteristics. For 0&leA&le0.6, the plotting curves of resistance-temperature characteristic are none linear on the wide temperature range, exhibit two branches. The obtained B25/150 and B700/1000 constants of the thermistors are in the range 3600-4400K and 6700-12000K. The magnitude order of the resistivity at 25°C is of 106-107Ωcm and activation energies vary from 0.313 to 1.029 eV at low and high temperatures, respectively. These compounds, having good NTC characteristics in a wide range of temperatures, could be applied as potential candidates for NTC thermistors from ambient to 1100°C. © (2012) Trans Tech Publications.
语种: 英语
内容类型: 会议论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/2299
Appears in Collections:材料物理与化学研究室_会议论文

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Zhang Bo;Zhao Qing;Chang Aimin;Zhao Pengjun;Guan Fang.rare earth and perovskite composite ceramics applied for the thermistor in wide temperature range.见:.Key Engineering Materials,Switzerland,2012,613-616
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