Effect of La2O3 Addition on Copper-Nickel Manganese Thermistors for Low-Temperature Applications
Yao Jincheng; Wang Junhua; Zhao Qing; Chang Aimin; Yao, JC
2013
发表期刊INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
ISSN1546-542X
卷号10期号:增刊: 1页码:E106-E112
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.

学科领域Materials Science
DOI10.1111/ijac.12054
收录类别SCI
WOS记录号WOS:000323828700013
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/2638
专题新疆维吾尔自治区电子信息材料与器件重点实验室
通讯作者Yao, JC
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
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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.
APA Yao Jincheng,Wang Junhua,Zhao Qing,Chang Aimin,&Yao, JC.(2013).Effect of La2O3 Addition on Copper-Nickel Manganese Thermistors for Low-Temperature Applications.INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY,10(增刊: 1),E106-E112.
MLA Yao Jincheng,et al."Effect of La2O3 Addition on Copper-Nickel Manganese Thermistors for Low-Temperature Applications".INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY 10.增刊: 1(2013):E106-E112.
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