Multiple phase transitions and structural oscillations in thermoelectric Cu2S at elevating temperatures

doi:10.1016/j.ceramint.2018.04.127

	Multiple phase transitions and structural oscillations in thermoelectric Cu2S at elevating temperatures
	Duan, Jialin 1,2,3; Zhu, Chenxi 1; Guan, Mengjia ; Lu, Ping 1; He, Ying ; Fu, Zhengqian 1,2,3; Zhang, Linlin 1; Xu, Fangfang 1,2; Shi, Xun ; Chen, Lidong
刊名	CERAMICS INTERNATIONAL
	2018
卷号	44 期号:11 页码:13076
关键词	Cuprous sulfide Multiphase Phase transition In-situ TEM
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2018.04.127
英文摘要	The intrinsic ultra-low lattice thermal conductivity (kappa(L)) of high performance thermoelectric Cu2S may arise from its multiform complex crystal structures while the further sharp drop of kappa(L) observed at elevating temperatures close to the phase transition to hexagonal high-chalcocite is of considerable interest. In this work, in-depth in situ transmission electron microscopy investigations have been performed by either heating or electron irradiation to analyze the structural evolution of Cu2S. Multiple including new phase structures have been observed in Cu2S. Upon increasing the temperature, drastic structural changes took place including phase transition among different phases, formation of an intermediate phase, switching of crystal orientation and inverse phase transitions, which indicate multiple forms of Cu ordering with high temperature-sensitivity. Such tremendous structural evolution along with formation and movement of phase boundaries are believed to strongly scatter the phonons.
学科主题	Materials Science, Ceramics
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000436351700151
资助机构	This work is supported by the National Natural Science Foundation of China (51672296 and 51625205) ; National Key R&D Program of China (2016YFA0201103) ; Science and Technology Commission of Shanghai Municipality (16DZ2260603) ; and Shanghai Technical Platform for Testing and Characterization on Inorganic Materials (14DZ2292900). ; This work is supported by the National Natural Science Foundation of China (51672296 and 51625205) ; National Key R&D Program of China (2016YFA0201103) ; Science and Technology Commission of Shanghai Municipality (16DZ2260603) ; and Shanghai Technical Platform for Testing and Characterization on Inorganic Materials (14DZ2292900).
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24775]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Shanghai Inst Mat Genome, Shanghai 200444, Peoples R China 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Duan, Jialin,Zhu, Chenxi,Guan, Mengjia,et al. Multiple phase transitions and structural oscillations in thermoelectric Cu2S at elevating temperatures[J]. CERAMICS INTERNATIONAL,2018,44(11):13076, 13081.
APA	Duan, Jialin.,Zhu, Chenxi.,Guan, Mengjia.,Lu, Ping.,He, Ying.,...&Chen, Lidong.(2018).Multiple phase transitions and structural oscillations in thermoelectric Cu2S at elevating temperatures.CERAMICS INTERNATIONAL,44(11),13076.
MLA	Duan, Jialin,et al."Multiple phase transitions and structural oscillations in thermoelectric Cu2S at elevating temperatures".CERAMICS INTERNATIONAL 44.11(2018):13076.