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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
Conference Name2nd International Conference on Advances in Materials and Manufacturing Processes, ICAMMP 2011
Source PublicationAdvanced Materials Research
Pages1078-1082
Conference DateDecember 16, 2011 - December 18, 2011
Conference PlaceGuilin, PEOPLES R CHINA
Publication PlaceGermany
Abstract

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.

Funding OrganizationUniversity of Wollongong; Northeastern University; University of Science and Technology Beijing; Hebei Polytechnic University
Indexed ByEI
Document Type会议论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/2300
Collection材料物理与化学研究室
AffiliationChinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
Recommended Citation
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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