Systematic change of flux pinning in (Dy,RE)123 and (Y,RE)123 melt-solidified bulks with unit cell orthorhombicity

Y. Setoyama; J. Shimoyama; S. Yamaki; A. Yamamoto; H. Ogino; K. Kishio; Satoshi Awaji

doi:10.1088/0953-2048/28/1/015014

Systematic change of flux pinning in (Dy,RE)123 and (Y,RE)123 melt-solidified bulks with unit cell orthorhombicity

Y. Setoyama, J. Shimoyama, S. Yamaki, A. Yamamoto, H. Ogino, K. Kishio, Satoshi Awaji

High Field Laboratory for Superconducting Materials

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

7 Citations (Scopus)

Abstract

RE-mixing is one of the most effective ways to enhance critical current density J_c of RE123 melt-solidified bulks; however, the intrinsic effects of RE-mixing on J_c have not yet been well clarified. Through synthesis and analysis of eight types of melt-solidified bulks containing one or two RE elements, the effects of RE-mixing on J_c-H characteristics were systematically investigated. It was revealed that RE-mixed bulks show higher J_c than RE123 bulks accompanied by the secondary peaks of J_c in a high field region. Analyses on the relationship between J_c and orthorhombicity suggested that the RE substitution level for Ba sites can be controlled by RE-mixing to enhance J_c in magnetic fields. Combined with the results of magnetic measurements at 40 and 60 K up to 15 T, RE-mixed bulks originating from Y123 powders were found to be high potential materials for high field generating applications.

Original language	English
Article number	015014
Journal	Superconductor Science and Technology
Volume	28
Issue number	1
DOIs	https://doi.org/10.1088/0953-2048/28/1/015014
Publication status	Published - 2015 Jan 1

Keywords

RE-mixing
REBaCuOy melt-solidified bulks
critical current density

ASJC Scopus subject areas

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

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title = "Systematic change of flux pinning in (Dy,RE)123 and (Y,RE)123 melt-solidified bulks with unit cell orthorhombicity",

abstract = "RE-mixing is one of the most effective ways to enhance critical current density Jc of RE123 melt-solidified bulks; however, the intrinsic effects of RE-mixing on Jc have not yet been well clarified. Through synthesis and analysis of eight types of melt-solidified bulks containing one or two RE elements, the effects of RE-mixing on Jc-H characteristics were systematically investigated. It was revealed that RE-mixed bulks show higher Jc than RE123 bulks accompanied by the secondary peaks of Jc in a high field region. Analyses on the relationship between Jc and orthorhombicity suggested that the RE substitution level for Ba sites can be controlled by RE-mixing to enhance Jc in magnetic fields. Combined with the results of magnetic measurements at 40 and 60 K up to 15 T, RE-mixed bulks originating from Y123 powders were found to be high potential materials for high field generating applications.",

keywords = "RE-mixing, REBaCuOy melt-solidified bulks, critical current density",

author = "Y. Setoyama and J. Shimoyama and S. Yamaki and A. Yamamoto and H. Ogino and K. Kishio and Satoshi Awaji",

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doi = "10.1088/0953-2048/28/1/015014",

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AU - Setoyama, Y.

AU - Shimoyama, J.

AU - Yamaki, S.

AU - Yamamoto, A.

AU - Ogino, H.

AU - Kishio, K.

AU - Awaji, Satoshi

PY - 2015/1/1

Y1 - 2015/1/1

N2 - RE-mixing is one of the most effective ways to enhance critical current density Jc of RE123 melt-solidified bulks; however, the intrinsic effects of RE-mixing on Jc have not yet been well clarified. Through synthesis and analysis of eight types of melt-solidified bulks containing one or two RE elements, the effects of RE-mixing on Jc-H characteristics were systematically investigated. It was revealed that RE-mixed bulks show higher Jc than RE123 bulks accompanied by the secondary peaks of Jc in a high field region. Analyses on the relationship between Jc and orthorhombicity suggested that the RE substitution level for Ba sites can be controlled by RE-mixing to enhance Jc in magnetic fields. Combined with the results of magnetic measurements at 40 and 60 K up to 15 T, RE-mixed bulks originating from Y123 powders were found to be high potential materials for high field generating applications.

AB - RE-mixing is one of the most effective ways to enhance critical current density Jc of RE123 melt-solidified bulks; however, the intrinsic effects of RE-mixing on Jc have not yet been well clarified. Through synthesis and analysis of eight types of melt-solidified bulks containing one or two RE elements, the effects of RE-mixing on Jc-H characteristics were systematically investigated. It was revealed that RE-mixed bulks show higher Jc than RE123 bulks accompanied by the secondary peaks of Jc in a high field region. Analyses on the relationship between Jc and orthorhombicity suggested that the RE substitution level for Ba sites can be controlled by RE-mixing to enhance Jc in magnetic fields. Combined with the results of magnetic measurements at 40 and 60 K up to 15 T, RE-mixed bulks originating from Y123 powders were found to be high potential materials for high field generating applications.

KW - RE-mixing

KW - REBaCuOy melt-solidified bulks

KW - critical current density

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Systematic change of flux pinning in (Dy,RE)123 and (Y,RE)123 melt-solidified bulks with unit cell orthorhombicity

Abstract

Keywords

ASJC Scopus subject areas

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