Temperature evolution of structural and electrical property for Sr7Mn4O15 at high temperature

CORC > 上海硅酸盐研究所 > 中国科学院上海硅酸盐研究所 > 无机材料分析测试中心 > 期刊论文

	Temperature evolution of structural and electrical property for Sr7Mn4O15 at high temperature
	Yang, X. M.1; Xie, Weimei 1; Gu, X. M.1; Zhou, G. T.1; Lv, Kai 1; Cheng, G. F.2; Zhang, A. M.3; Zhang, F. M.1; Wu, X. S.1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2017-03-30
卷号	699 页码:230-234
关键词	Sr7Mn4O15 ceramic in-situ X-ray diffraction Electronic transport property Negative Temperature Coefficient (NTC) Thermistor ceramics
英文摘要	Temperature dependence of structural evolution for single phase Sr7Mn4O15 is 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 Sr7Mn4O15 lattice 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 Sr7Mn4O15 is 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 Sr7Mn4O15 is estimated with first principle calculation, which exhibits a dramatic reduction from 1.141 eV to 0.349 eV with increasing the temperature. (C) 2016 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
研究领域[WOS]	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
关键词[WOS]	AUGMENTED-WAVE METHOD ; OXIDE ; THERMISTORS ; CERAMICS
收录类别	SCI
语种	英语
WOS记录号	WOS:000393727500032
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/23489]
专题	上海硅酸盐研究所_无机材料分析测试中心_期刊论文
作者单位	1.Nanjing Univ, Sch Phys, Collaborat Innovat Ctr Adv Microstruct, Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai, Peoples R China 3.Hohai Univ, Coll Sci, Nanjing 210098, Jiangsu, Peoples R 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 Sr7Mn4O15 at 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 Sr7Mn4O15 at high temperature.JOURNAL OF ALLOYS AND COMPOUNDS,699,230-234.
MLA	Yang, X. M.,et al."Temperature evolution of structural and electrical property for Sr7Mn4O15 at high temperature".JOURNAL OF ALLOYS AND COMPOUNDS 699(2017):230-234.