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学科主题: Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
题名: La2O3-doped 0.6Y(2)O(3)-0.4YCr(0.5)Mn(0.5)O(3) composite NTC ceramics for wide range of temperature sensing
作者: Zhang Bo; Zhao Qing; Chang Aimin; Huang Xia; Hou Juan; Zhao Pengjun; Ji Guang
通讯作者: Zhao, Q
关键词: Wide temperature range ; NTC thermistors ; Perovskites ; La2O3
刊名: JOURNAL OF ALLOYS AND COMPOUNDS
发表日期: 2013
DOI: 10.1016/j.jallcom.2013.07.060
卷: 581, 期:12, 页:573-578
收录类别: SCI
资助者: National Natural Science Foundation of China 51102276; Natural Science Foundation of Xinjiang of China 2010211A59; High Technology Research and Development Program of Xinjiang of China 201116147; National High Technology Research and Development Program of China 2012 AA091102
摘要: Ceramic compositions based on 0.6Y(2)O(3)-0.4YCr(0.5)Mn(0.5)O(3) doped with La2O3 were prepared by solid state reaction at different calcining temperatures, and sintered at 1550 and 1600 degrees C. XRD patterns have shown that there exists a LaCr0.5Mn0.5O3 phase when the amount of La2O3 increases to 5.0 wt% in the calcined powders. Major phases presented in the sintered ceramics are Y2O3 phase and orthorhombic perovskite phase isomorphic to YCrO3. The obtained q25, B25/150 and B700/1000 constants of the La2O3-doped NTC thermistors are in the range of 105-106 X cm, 3600-3800 K and 6000-6600 K, respectively. The electrical conductivity in these compounds may be due to the presence of Cr3+, Cr4+, Mn3+ and Mn4+ on octahedral sites. The resistance almost does not change when the aging time is from 600 to 1000 h. Such ceramics could be used as potential candidates for NTC thermistors in a wide temperature range from ambient to 1100 degrees C.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/2627
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, Key Lab Funct Mat & Devices Special Environm, Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China; Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Zhang Bo,Zhao Qing,Chang Aimin,et al. La2O3-doped 0.6Y(2)O(3)-0.4YCr(0.5)Mn(0.5)O(3) composite NTC ceramics for wide range of temperature sensing[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2013,581(12):573-578.
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文件名: La2O3-doped 0.6Y2O3–0.4YCr0.5Mn0.5O3 composite NTC ceramics for wide range of temperature sensing.pdf
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