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Temperature evolution of structural and electrical property for Sr7Mn4O15at high temperature

文献类型：期刊论文

作者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
刊名Journal of Alloys and Compounds
出版日期2017
卷号699页码:230-234
ISSN号09258388
DOI10.1016/j.jallcom.2016.12.245
英文摘要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.
源URL[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
推荐引用方式
GB/T 7714		 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.

入库方式： OAI收割

来源：上海硅酸盐研究所

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