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Effect of La2O3 Addition on the Microstructure and Electrical Properties of Copper-Nickel Manganese Thermistors
Yao Jincheng; Wang Junhua; Zhao Qing; Huang Xia; Chang Aimin
2012
会议名称2nd International Conference on Advances in Materials and Manufacturing Processes, ICAMMP 2011
会议录名称Advanced Materials Research
页码1078-1082
会议日期December 16, 2011 - December 18, 2011
会议地点Guilin, PEOPLES R CHINA
出版地Germany
摘要

The effect of La2O3 addition on the microstructure and electrical properties of Mn0.75Ni1.25CuO 4-xLa2O3 (0&lex&le0.3) was studied. The crystal structure, phase compositions and morphology were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The sintered ceramic bodies was typical polycrystalline, with cubic spinel structure of copper manganese oxide, rocksalt structure of nickel copper oxide, along with monoclinic phase of copper oxide and orthorhombic perovskite structure of lanthanum manganese oxide. The obtained ρ77K, B77K/90Kconstant and activation energy of the thermistors were in the range of 3.88-9.29 Ω cm, 245-261 K, and 0.0211-0.0225 eV, respectively. This means that the electrical properties can be adjusted to desired values, depending on the La content. So these prepared thermistors were intended to be used under low temperature conditions.

主办者University of Wollongong; Northeastern University; University of Science and Technology Beijing; Hebei Polytechnic University
收录类别EI
文献类型会议论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/2300
专题材料物理与化学研究室
作者单位Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714
Yao Jincheng,Wang Junhua,Zhao Qing,et al. Effect of La2O3 Addition on the Microstructure and Electrical Properties of Copper-Nickel Manganese Thermistors[C]. Germany,2012:1078-1082.
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