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	Pressure-induced phase-transition and improvement of the microdielectric properties in yttrium-doped srzro3
	Dai, Lidong1; Wu, Lei1; Li, Heping1; Hu, Haiying1; Zhuang, Yukai1,2; Liu, Kaixiang1,2
刊名	Epl
	2016-06-01
卷号	114期号:5页码:6
ISSN号	0295-5075
DOI	10.1209/0295-5075/114/56003
通讯作者	Wu, lei(wulei@mail.gyig.ac.cn)
英文摘要	In this study, the effect of pressure on undoped and 5% yttrium-doped srzro3 (szy0 and szy5) were conducted from the ambient condition to similar to 25gpa with a diamond anvil cell. the comparison of the high-pressure raman spectra of szy0 and szy5 indicate that szy0 displays a rigid structure without any structural modification, whereas for szy5 a structural transition at similar to 15gpa is revealed. some characteristic physical parameters such as bulk conductivities, grain boundary conductivities, warburg diffusion coefficient, transference number and bulk relaxation frequency were determined by the high-pressure impedance spectroscopy data. an obvious discontinuous inflexion point (at similar to 13gpa) for szy5 sample is observable which was also verified the phase-transition of the raman spectroscopy results. a mixed conduction mechanism for both szy0 and szy5 are coexisting for both szy0 and szy5 in a wide pressure range. the pressure-induced phase-transition of szy5 would result in an inversion of conduction mechanism that is characterized by the dominant charge carriers transformation from electron to ion. the maxwell-wagner relaxation arising at the interfaces of grain and grain boundary indicates that y-doping and pressure could make the ions diffusion much easier through the boundaries and finally enhance the dielectric performance of the sample. it is suggested that pressure could be a useful tool to manipulate the microstructure and dielectric performance of polycrystal through altering the grain boundary distribution. copyright (c) epla, 2016
WOS关键词	HIGH-TEMPERATURE ; PROTONIC CONDUCTION ; STRONTIUM ZIRCONATE ; IONIC-CONDUCTIVITY ; FUEL-CELLS ; BEHAVIOR ; FILMS ; IDENTIFICATION ; SUPERLATTICES ; SPECTROSCOPY
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
语种	英语
出版者	EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
WOS记录号	WOS:000379525400020
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374684
专题	中国科学院大学
通讯作者	Wu, Lei
作者单位	1.Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths In, Guiyang 550002, Guizhou, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Dai, Lidong,Wu, Lei,Li, Heping,et al. Pressure-induced phase-transition and improvement of the microdielectric properties in yttrium-doped srzro3[J]. Epl,2016,114(5):6.
APA	Dai, Lidong,Wu, Lei,Li, Heping,Hu, Haiying,Zhuang, Yukai,&Liu, Kaixiang.(2016).Pressure-induced phase-transition and improvement of the microdielectric properties in yttrium-doped srzro3.Epl,114(5),6.
MLA	Dai, Lidong,et al."Pressure-induced phase-transition and improvement of the microdielectric properties in yttrium-doped srzro3".Epl 114.5(2016):6.

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