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	Vortex pinning properties in co-doped bafe2as2 thin films with a high critical current density over 2 ma cm?2 at 9 t
	Yuan,Pusheng1,2; Xu,Zhongtang1; Wang,Dongliang1; Zhang,Ming3; Li,Jianqi3; Ma,Yanwei1
刊名	Superconductor science and technology
	2016-11-30
卷号	30期号:2
关键词	Iron-based superconductors Critical current density Co-doped bafe2as2 Film
ISSN号	0953-2048
DOI	10.1088/0953-2048/30/2/025001
英文摘要	Abstract similar to other high-temperature superconductors, the pinning centers largely determine the critical current density (jc) in co-doped bafe2as2 (ba122:co). therefore, understanding the vortex pinning mechanism of high-jc ba122:co thin films is important for the applications of ba122:co. herein we report the pinning of the naturally grown defects in ba122:co thin films with a high critical current density. the transport jc of thin films is up to 2.6 ma cm?2 in 9 t at 4.2 k, which is the highest value in iron-based superconductors. microstructure investigations reveal a high density of ab-planar defects (stacking faults) and localized vertical defects present in the sample. the dew–hughes mode analyses prove that pinning centers by surface defects and by point defects are responsible for h//ab and h//c, respectively. therefore, the high jc in strong magnetic field for both h//ab and h//c are related to surface and point defects which act as the pinning centers in ba122:co films.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0953-2048-30-2-025001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2373535
专题	物理研究所
作者单位	1.Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China 2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 3.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
推荐引用方式 GB/T 7714	Yuan,Pusheng,Xu,Zhongtang,Wang,Dongliang,et al. Vortex pinning properties in co-doped bafe2as2 thin films with a high critical current density over 2 ma cm?2 at 9 t[J]. Superconductor science and technology,2016,30(2).
APA	Yuan,Pusheng,Xu,Zhongtang,Wang,Dongliang,Zhang,Ming,Li,Jianqi,&Ma,Yanwei.(2016).Vortex pinning properties in co-doped bafe2as2 thin films with a high critical current density over 2 ma cm?2 at 9 t.Superconductor science and technology,30(2).
MLA	Yuan,Pusheng,et al."Vortex pinning properties in co-doped bafe2as2 thin films with a high critical current density over 2 ma cm?2 at 9 t".Superconductor science and technology 30.2(2016).

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