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学科主题: Materials Science
题名: Effect of La2O3 Addition on Copper-Nickel Manganese Thermistors for Low-Temperature Applications
作者: Yao Jincheng; Wang Junhua; Zhao Qing; Chang Aimin
通讯作者: Yao, JC
刊名: INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
发表日期: 2013
DOI: 10.1111/ijac.12054
卷: 10, 期:增刊: 1, 页:E106-E112
收录类别: SCI
资助者: foundation of seed project of Urumqi Science and Technology Bureau K101410009; Natural Science Foundation of Xinjiang Uygur Autonomous Region 2010211A59
摘要: The introduction of La2O3 to Mn0.75Ni1.25CuO4 ceramics was studied on the microstructure and electrical properties. The sintered Mn0.75Ni1.25CuO4-xLa(2)O(3) (0x0.3) 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. It is found that La doping reduces the material grain size and changes its morphology from the plate-like form to a spherical staking-like form. The shape and size of the grains are strongly influenced by the addition of La to the system. The X-ray photoelectron spectroscopy analysis corroborates the presence of nonequivalent ions at octahedral sites. The obtained (77K), B-77K/90K constant and activation energy of the negative temperature coefficient (NTC) Mn0.75Ni1.25CuO4-xLa(2)O(3) thermistors were in the range of 13.19-30.39 cm, 315-326K, and 0.0272-0.0281eV, respectively. This means that the electrical properties can be adjusted to desired values, depending on the La content. Such ceramics could be used as potential candidates for NTC thermistors in a temperature range from 20K to 90K. So these prepared NTC thermistors were intended to be used under low-temperature conditions.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/2638
Appears in Collections:新疆维吾尔自治区电子信息材料与器件重点实验室_期刊论文

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作者单位: Chinese Acad Sci, 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:
Yao Jincheng,Wang Junhua,Zhao Qing,et al. Effect of La2O3 Addition on Copper-Nickel Manganese Thermistors for Low-Temperature Applications[J]. INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY,2013,10(增刊: 1):E106-E112.
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