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
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume663Issue:4Pages:474-479
Abstract

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.

KeywordNtc Ceramics Defect Electrical Conduction X-ray Photoelectron Spectroscopy
DOI10.1016/j.jallcom.2015.12.162
Indexed BySCI
WOS IDWOS:000369060200064
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/4670
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
Corresponding AuthorChang, AM (Chang, Aimin)
Affiliation1.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
Recommended Citation
GB/T 7714
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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