Effect of starting materials on the superconducting properties of SmFeAsO 1-xF x tapes

Chunlei Wang; Chao Yao; Xianping Zhang; Zhaoshun Gao; Dongliang Wang; Chengduo Wang; He Lin; Yanwei Ma; Satoshi Awaji; Kazuo Watanabe

doi:10.1088/0953-2048/25/3/035013

Effect of starting materials on the superconducting properties of SmFeAsO _1-xF _x tapes

Chunlei Wang, Chao Yao, Xianping Zhang, Zhaoshun Gao, Dongliang Wang, Chengduo Wang, He Lin, Yanwei Ma, Satoshi Awaji, Kazuo Watanabe

High Field Laboratory for Superconducting Materials

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

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.

Original language	English
Article number	035013
Journal	Superconductor Science and Technology
Volume	25
Issue number	3
DOIs	https://doi.org/10.1088/0953-2048/25/3/035013
Publication status	Published - 2012 Mar

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/25/3/035013

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Effect of starting materials on the superconducting properties of SmFeAsO _1-xF _x tapes. / Wang, Chunlei; Yao, Chao; Zhang, Xianping; Gao, Zhaoshun; Wang, Dongliang; Wang, Chengduo; Lin, He; Ma, Yanwei; Awaji, Satoshi; Watanabe, Kazuo.

In: Superconductor Science and Technology, Vol. 25, No. 3, 035013, 03.2012.

Research output: Contribution to journal › Article › peer-review

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abstract = "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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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

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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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Effect of starting materials on the superconducting properties of SmFeAsO _1-xF _x tapes

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