The variation of pinning efficiency in YBCO films containing columnar defects

doi:10.1016/j.physc.2021.1354000

	The variation of pinning efficiency in YBCO films containing columnar defects
	Liu, Li 1,2; Liu, Jie 1,2; Zhai, PengFei 1,2; Zhang, ShengXia 1; Zeng, Jian 1,2; Hu, PeiPei 1; Xu, LiJun 1; Li, ZongZhen 1
刊名	PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
	2022-01-15
卷号	592 页码:6
关键词	Heavy ions irradiation Columnar defects Pinning efficiency YBCO films
ISSN号	0921-4534
DOI	10.1016/j.physc.2021.1354000
通讯作者	Liu, Jie(j.liu@impcas.ac.cn)
英文摘要	YBa2Cu3O7-x (YBCO) films were irradiated by ions with different electronic energy loss Se (17.7 keV/nm Kr ions, 35.8 keV/nm Ta ions and 43.7 keV/nm Bi ions) at identical fluence of 5 x 1010 ions/cm2. Existences of columnar defects, i.e. latent tracks, in Ta ions and Bi ions irradiated YBCO films have been confirmed by TEM (transmission electron microscope) analysis, respectively. Variations of pinning efficiency eta, which can be represented as ratio between pinning force density Fp,i of irradiated sample and Fp,p of pristine sample at the same temperature, with temperature and magnetic field in YBCO films irradiated with different ion species were systematically studied. eta in all the irradiated samples show monotonically increasing trend with increasing temperature. Nevertheless, as the number of vortices, i.e. external magnetic field B, increases, eta in YBCO film containing latent tracks gradually reaches its maximum value at low magnetic field and then decreases slowly, totally different from YBCO film containing no latent tracks. This phenomenon may provide a fresh idea to judging the existence of columnar defects in YBCO films. Peak position Bp is far below matching field (B phi approximate to 1.0 T) and peak value increased with increasing temperature. Moreover, sample containing larger-size columnar defects (which can be produced by ions with higher Se) exhibits higher but narrower peak in eta-B curve, which is also important for future application.
资助项目	National Natural Science Foundation of China[12035019] ; National Natural Science Foundation of China[11690041]
WOS关键词	VORTEX ; SUPERCONDUCTOR ; REDUCTION ; VORTICES ; CRYSTALS ; ARRAYS ; FIELDS
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000736965000005
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/142433]
专题	中国科学院近代物理研究所
通讯作者	Liu, Jie
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci UCAS, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Li,Liu, Jie,Zhai, PengFei,et al. The variation of pinning efficiency in YBCO films containing columnar defects[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,2022,592:6.
APA	Liu, Li.,Liu, Jie.,Zhai, PengFei.,Zhang, ShengXia.,Zeng, Jian.,...&Li, ZongZhen.(2022).The variation of pinning efficiency in YBCO films containing columnar defects.PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,592,6.
MLA	Liu, Li,et al."The variation of pinning efficiency in YBCO films containing columnar defects".PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 592(2022):6.