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学科主题: Engineering ; Materials Science ; Physics
题名: Effect of Mg substitution on microstructure and electrical properties of Mn1.25Ni0.75Co1.0-xMgxO4(0 <= x <= 1) NTC ceramics
作者: Peng Changwen; Zhang Huimin; Chang Aimin; Guan Fang; Zhang Bo; Zhao Pengjun
通讯作者: Chang, AM
刊名: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
发表日期: 2012
DOI: 10.1007/s10854-011-0505-8
卷: 23, 期:4, 页:851-857
收录类别: SCI
资助者: National Science Foundation of China 50902148; Western Light Foundation of Chinese Academy of Sciences RCPY200901
摘要:

The NTC thermistors based on spinel-type semiconducting electroceramics with compositions Mn1.25Ni0.75Co1.0-xMgxO4 (0 <= x <= 1) were synthesized by solid-state method. The influences of Mg content on the Mn1.25Ni0.75Co1.0-xMgxO4 materials were investigated by laser particle size analyzer, XRD, SEM, EDS and electrical measurements, respectively. The experiment results show that the substituted Mg suppresses the separation of NiO phase. Both the grain size and density decrease as the amount of Mg content in Mn1.25Ni0.75Co1.0-xMgxO4 samples increases. In particular, the substituted Mg leads to a decrease in the resistance drift of the Mn1.25Ni0.75Co1.0-xMgxO4 NTC ceramics after aging test. This indicates that the Mg substituted Mn1.25Ni0.75Co1.0-xMgxO4 NTC ceramics display high electrical stability in comparison with the Mg-free Mn1.25Ni0.75Co1.0O4 ceramics.

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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/1409
Appears in Collections:材料物理与化学研究室_期刊论文

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作者单位: CAS, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China;Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China;Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China

Recommended Citation:
Peng Changwen,Zhang Huimin,Chang Aimin,et al. Effect of Mg substitution on microstructure and electrical properties of Mn1.25Ni0.75Co1.0-xMgxO4(0 <= x <= 1) NTC ceramics[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2012,23(4):851-857.
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文件名: Effect of Mg substitution on microstructure and electrical properties of Mn1.25Ni0.75Co1.0-xMgxO4(0 = x = 1) NTC ceramics.pdf
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