TY - JOUR
T1 - Effect of starting materials on the superconducting properties of SmFeAsO 1-xF x tapes
AU - Wang, Chunlei
AU - Yao, Chao
AU - Zhang, Xianping
AU - Gao, Zhaoshun
AU - Wang, Dongliang
AU - Wang, Chengduo
AU - Lin, He
AU - Ma, Yanwei
AU - Awaji, Satoshi
AU - Watanabe, Kazuo
PY - 2012/3
Y1 - 2012/3
N2 - SmFeAsO 1-xF x tapes were prepared using three kinds of starting materials. This showed that the starting materials have an obvious effect on the impurity phases in the final superconducting tapes. Compared with the other samples, the samples fabricated with SmAs, FeO, Fe 2As, and SmF 3 have the smallest arsenide impurity phases and voids. As a result, these samples possess much denser structures and better grain connectivities. Moreover, among the three kinds of sample fabricated in this work, this kind of sample has the highest zero resistivity temperature, ∼40K, and the largest critical current density, ∼4600Acm -2, in self-field at 4.2K. This is the highest J c value reported so far for SmFeAsO 1-xF x wires and tapes.
AB - SmFeAsO 1-xF x tapes were prepared using three kinds of starting materials. This showed that the starting materials have an obvious effect on the impurity phases in the final superconducting tapes. Compared with the other samples, the samples fabricated with SmAs, FeO, Fe 2As, and SmF 3 have the smallest arsenide impurity phases and voids. As a result, these samples possess much denser structures and better grain connectivities. Moreover, among the three kinds of sample fabricated in this work, this kind of sample has the highest zero resistivity temperature, ∼40K, and the largest critical current density, ∼4600Acm -2, in self-field at 4.2K. This is the highest J c value reported so far for SmFeAsO 1-xF x wires and tapes.
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U2 - 10.1088/0953-2048/25/3/035013
DO - 10.1088/0953-2048/25/3/035013
M3 - Article
AN - SCOPUS:84863128449
VL - 25
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 3
M1 - 035013
ER -