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Temperature evolution of structural and electrical property for Sr7Mn4O15at high temperature
Yang, X.M.1; Xie, Weimei1; Gu, X.M.1; Zhou, G.T.1; Lv, Kai1; Cheng, G.F.2; Zhang, A.M.3; Zhang, F.M.1; Wu, X.S.1
2017
发表期刊Journal of Alloys and Compounds
ISSN09258388
卷号699页码:230-234
摘要Temperature dependence of structural evolution for single phase Sr7Mn4O15is determined using the in-situ X-ray diffraction with Rietveld refinements in the temperature range of 300–1200 K. It's found that thermal expansion of Sr7Mn4O15lattice parameters increase linearly with temperature. The structure of face-sharing clusters prefers expansion in the transverse, and corner-sharing clusters prefers the stretch in the longitudinal. Resistance decreases sharply with increasing temperature at high temperature, which means that the Sr7Mn4O15is a well candidate in applications as negative temperature coefficient thermistor. Based on the fitted atomic parameters given from Rietveld refinements, temperature dependent band gap of Sr7Mn4O15is estimated with first principle calculation, which exhibits a dramatic reduction from 1.141 eV to 0.349 eV with increasing the temperature. © 2016 Elsevier B.V.
DOI10.1016/j.jallcom.2016.12.245
EI入藏号20170203231294
EI主题词High temperature applications
EI分类号641.1 Thermodynamics - 714 Electronic Components and Tubes - 714.2 Semiconductor Devices and Integrated Circuits - 744.1 Lasers, General - 801 Chemistry - 931.2 Physical Properties of Gases, Liquids and Solids
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25482
专题中国科学院上海硅酸盐研究所
作者单位1.Collaborative Innovation Center of Advanced Microstructures, Lab of Solid State Microstructure, School of Physics, Nanjing University, Nanjing; 210093, China;
2.Shanghai Institute of Ceramics, Chinese Academy of Sciences, China;
3.College of Science, Hohai University, Nanjing; 210098, China
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Yang, X.M.,Xie, Weimei,Gu, X.M.,et al. Temperature evolution of structural and electrical property for Sr7Mn4O15at high temperature[J]. Journal of Alloys and Compounds,2017,699:230-234.
APA Yang, X.M..,Xie, Weimei.,Gu, X.M..,Zhou, G.T..,Lv, Kai.,...&Wu, X.S..(2017).Temperature evolution of structural and electrical property for Sr7Mn4O15at high temperature.Journal of Alloys and Compounds,699,230-234.
MLA Yang, X.M.,et al."Temperature evolution of structural and electrical property for Sr7Mn4O15at high temperature".Journal of Alloys and Compounds 699(2017):230-234.
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