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学科主题: Engineering ; Science & Technology - Other Topics ; Optics ; Physics
题名: Preparation and characterization of Fe3+-doped Ni0.9Co0.8Mn1.3-xFexO4 (0 <= x <= 0.7) negative temperature coefficient ceramic materials
作者: Zhang Huimin; Chang Aimin; Peng Changwen
通讯作者: Zhang, HM
关键词: Fe ion ; Doped ; Co-precipitation method ; NTC ceramic material ; Electrical properties
刊名: Microelectronic Engineering
发表日期: 2011
DOI: 10.1016/j.mee.2011.04.023
卷: 88, 期:9, 页:2934-2940
收录类别: SCI
资助者: National Natural Science Foundation of ChinaK.C. Wong Education Foundation, Hong Kong
摘要: Based on spinel-type semiconducting electroceramics, negative temperature coefficient (NTC) thermistor materials, Ni0.9Co0.8Mn1.3-xFexO4 (0 <= x <= 0.7), with different compositions were synthesized by a co-precipitation method. The optimal pH value and the influence of Fe3+ doping during the synthesis processing were discussed. As-prepared Ni0.9Co0.8Mn1.3-xFexO4 materials were characterized by DT/TGA, XRD, FTIR, SEM, electrical measurement and impendance analysis. It was found that, as the Fe doping content in the Ni0.9Co0.8Mn1.3-xFexO4 samples increased, both the grain size and the density decreased. The as-sintered Ni0.9Co0.8Mn1.3-xFexO4 samples presented a single-phase cubic spinel structure. The impendance diagram indicated that the grain boundary resistance was dominant in the overall impendance of Ni0.9Co0.8Mn1.3-xFexO4 NTC ceramic materials. The value of rho(25). B-25/50, slope and activation energy for the samples Ni0.9Co0.8Mn1.3-xFexO4 sintered at 1200 degrees C were in the range of 453.1-2411 Omega cm, 3103-3355 K, 3.27325-3.43149 and 0.28207-0.29325 eV, respectively. This suggests that the electrical properties can be adjusted to desired values by controlling the Fe3+ ion doping content.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/1417
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; Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China;Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Zhang Huimin,Chang Aimin,Peng Changwen. Preparation and characterization of Fe3+-doped Ni0.9Co0.8Mn1.3-xFexO4 (0 <= x <= 0.7) negative temperature coefficient ceramic materials[J]. Microelectronic Engineering,2011,88(9):2934-2940.
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文件名: Preparation and characterization of Fe3+-doped Ni0.9Co0.8Mn1.3-xFexO4 (0 = x = 0.7) negative temperature coefficient ceramic materials.pdf
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