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题名: Effect of La<inf>2</inf>O<inf>3</inf> addition on the microstructure and electrical properties of copper-nickel manganese thermistors
作者: YaoJincheng ; WangJunhua ; ZhaoQing ; HuangXia ; Chang Aimin
会议名称: 2nd International Conference on Advances in Materials and Manufacturing Processes, ICAMMP 2011
会议日期: December 16, 2011 - December 18, 2011
出版日期: 2012
会议地点: Guilin, China
关键词: Thermistor ; Electrical Resistivity ; Copper-nickel manganese ; Lanthanum Manganese Oxide ; Low Temperature
通讯作者: Yao, J.(cqyaojincheng@163.com)
出版地: Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
收录类别: EI
ISSN: 10226680
ISBN: 9783037853252
部门归属: (1) Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
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.
语种: 英语
内容类型: 会议论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3602
Appears in Collections:材料物理与化学研究室_会议论文

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