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Effect of Mg substitution on microstructure and electrical properties of Mn1.25Ni0.75Co1.0-xMgxO4(0 <= x <= 1) NTC ceramics
Peng Changwen; Zhang Huimin; Chang Aimin; Guan Fang; Zhang Bo; Zhao Pengjun; Chang, AM
2012
Source PublicationJOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
ISSN9574522
Volume23Issue:4Pages:851-857
Abstract

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.

Subject AreaEngineering ; Materials Science ; Physics
DOI10.1007/s10854-011-0505-8
Indexed BySCI
WOS IDWOS:000302817400006
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/1409
Collection材料物理与化学研究室
Corresponding AuthorChang, AM
AffiliationCAS, 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
GB/T 7714
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.
APA Peng Changwen.,Zhang Huimin.,Chang Aimin.,Guan Fang.,Zhang Bo.,...&Chang, AM.(2012).Effect of Mg substitution on microstructure and electrical properties of Mn1.25Ni0.75Co1.0-xMgxO4(0 <= x <= 1) NTC ceramics.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,23(4),851-857.
MLA Peng Changwen,et al."Effect of Mg substitution on microstructure and electrical properties of Mn1.25Ni0.75Co1.0-xMgxO4(0 <= x <= 1) NTC ceramics".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 23.4(2012):851-857.
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