Hot pressing to enhance the transport J(c) of Sr0.6K0.4Fe2As2 superconducting tapes

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	Hot pressing to enhance the transport J(c) of Sr0.6K0.4Fe2As2 superconducting tapes
	Lin, H ; Yao, C ; Zhang, XP ; Dong, CH ; Zhang, HT ; Wang, DL ; Zhang, QJ ; Ma, YW ; Awaji, S ; Watanabe, K ; Tian, HF ; Li, JQ
刊名	SCIENTIFIC REPORTS
	2014
卷号	4
ISSN号	2045-2322
通讯作者	Ma, YW (reprint author), Chinese Acad Sci, Inst Elect Engn, Key Lab Appl Superconduct, POB 2703, Beijing 100190, Peoples R China.
中文摘要	High-performance Sr0.6K0.4Fe2As2 (Sr-122) tapes have been successfully fabricated using hot pressing (HP) process. The effect of HP temperatures (850-925 degrees C) on the c-axis texture, resistivity, Vickers micro-hardness, microstructure and critical current properties has been systematically studied. Taking advantage of high degree of c-axis texture, well grain connectivity and large concentration of strong-pinning defects, we are able to obtain an excellent J(c) of 1.2 x 10(5) A/cm(2) at 4.2 K and 10 T for Sr-122 tapes. More importantly, the field dependence of Jc turns out to be very weak, such that in 14 T the J(c) still remains, similar to 1.0 x 10(5) A/cm(2). These J(c) values are the highest ever reported so far for iron-pnictide wires and tapes, achieving the level desired for practical applications. Our results clearly strengthen the position of iron-pnictide conductors as a competitor to the conventional and MgB2 superconductors for high field applications.
资助信息	National '973' Program [2011CBA00105]; National Natural Science Foundation of China [51025726, 51320105015, 51202243]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59688]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Lin, H,Yao, C,Zhang, XP,et al. Hot pressing to enhance the transport J(c) of Sr0.6K0.4Fe2As2 superconducting tapes[J]. SCIENTIFIC REPORTS,2014,4.
APA	Lin, H.,Yao, C.,Zhang, XP.,Dong, CH.,Zhang, HT.,...&Li, JQ.(2014).Hot pressing to enhance the transport J(c) of Sr0.6K0.4Fe2As2 superconducting tapes.SCIENTIFIC REPORTS,4.
MLA	Lin, H,et al."Hot pressing to enhance the transport J(c) of Sr0.6K0.4Fe2As2 superconducting tapes".SCIENTIFIC REPORTS 4(2014).