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题名: New negative temperature coefficient thermistor ceramics in Mn-doped CaCu3-xMnxTi4O12 (0 <= x <= 1) system
作者: Zhang, Bo; Zhao, Qing; Chang, Aimin; Ye, Haitao; Chen, Shi; Wu, Yiquan
通讯作者: Chang, AM
关键词: Electrical properties ; Perovskites ; CaCu3Ti4O12 ; NTC thermistors
刊名: Ceramics International
发表日期: 2014
DOI: 10.1016/j.ceramint.2014.03.165
卷: 40, 期:7 PART B, 页:11221-11227
收录类别: SCI
摘要: New negative temperature coefficient (NTC) ceramics based on CaCu3-xMnxTi4O12 (0 <= x <= 1) compositions have been investigated. The grain size of the CaCu3-xMnxTi4O12 samples decreases at first and then increases with increasing Mn content. The X-ray photoelectron spectroscopy analysis corroborates the presence of Mn3+ and Mn4+ in Mn-doped samples, which results in a decrease in the activation energy. All the NTC thermistors prepared show a linear relationship between the natural logarithm of the resistivity and the reciprocal temperature, indicative of NTC characteristics. The Mn-doped CaCu3-xMnxTi4O12 NTC thermistors provide various electrical properties, depending on Mn content. The values of p25, B constant and activation energy of the NTC thermistors are in the range of 2.22 x 10(6)-3.22 x 10(-8) Omega cm, 5488-8031 K, and 0.473-0.692 eV, respectively.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3758
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: Xinjiang Tech Inst Phys & Chem CAS, Xinjiang Key Lab Elect Informat Mat & Devices, Key Lab Funct Mat & Devices Special Environm CAS, Urumqi 830011, Peoples R China;Univ Chinese Acad Sci, Beijing 100049, Peoples R China;Alfred Univ, New York State Coll Ceram, Kazuo Inamori Sch Engn, Alfred, NY 14802 USA;Aston Univ, Sch Engn & Appl Sci, Birmingham B4 7ET, W Midlands, England

Recommended Citation:
Zhang, Bo,Zhao, Qing,Chang, Aimin,et al. New negative temperature coefficient thermistor ceramics in Mn-doped CaCu3-xMnxTi4O12 (0 <= x <= 1) system[J]. Ceramics International,2014,40(7 PART B):11221-11227.
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