Defect and electrical conduction in Mn-doped CaCu3-xMnxTi4O12 negative temperature coefficient ceramics
Zhang, B (Zhang, Bo); Zhao, Q (Zhao, Qing); Chang, AM (Chang, Aimin); Wu, YQ (Wu, Yiquan)
2016
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
卷号663期号:4页码:474-479
摘要The defect and electrical conduction in Mn-doped CaCu3-xMnxTi4O12 (0 <= x <= 1) negative temperature coefficient (NTC) ceramics were successfully investigated by using defect chemistry theory in combination with X-ray photoelectron spectroscopy (XPS) analysis. An approximate linear relationship between the natural logarithm of the resistivity and the reciprocal temperature for Mn-doped samples was observed in comparison to CaCu3Ti4O12, and these linear electrical behaviors were extremely enhanced with increasing Mn content. As the Mn concentration increased, Ea(25-500 degrees C) decreased and Ea(500-800 degrees C) increased at first and then slightly decreased. The defect in these ceramics may mainly result from the cation non-stoichiometry in the temperature range from ambient to 500 degrees C and oxygen vacancy after 500 degrees C.
关键词Ntc Ceramics Defect Electrical Conduction X-ray Photoelectron Spectroscopy
DOI10.1016/j.jallcom.2015.12.162
收录类别SCI
WOS记录号WOS:000369060200064
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/4670
专题中国科学院特殊环境功能材料与器件重点试验室
作者单位1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Alfred Univ, New York State Coll Ceram, Kazuo Inamori Sch Engn, Alfred, NY 14802 USA
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Zhang, B ,Zhao, Q ,Chang, AM ,et al. Defect and electrical conduction in Mn-doped CaCu3-xMnxTi4O12 negative temperature coefficient ceramics[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2016,663(4):474-479.
APA Zhang, B ,Zhao, Q ,Chang, AM ,&Wu, YQ .(2016).Defect and electrical conduction in Mn-doped CaCu3-xMnxTi4O12 negative temperature coefficient ceramics.JOURNAL OF ALLOYS AND COMPOUNDS,663(4),474-479.
MLA Zhang, B ,et al."Defect and electrical conduction in Mn-doped CaCu3-xMnxTi4O12 negative temperature coefficient ceramics".JOURNAL OF ALLOYS AND COMPOUNDS 663.4(2016):474-479.
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