Enhancement of critical current densities in (Ba,K)Fe2As2 wires and tapes using HIP technique

Sunseng Pyon; Takahiro Suwa; Akiyoshi Park; Hideki Kajitani; Norikiyo Koizumi; Yuji Tsuchiya; Satoshi Awaji; Kazuo Watanabe; Tsuyoshi Tamegai

doi:10.1088/0953-2048/29/11/115002

Enhancement of critical current densities in (Ba,K)Fe₂As₂ wires and tapes using HIP technique

Sunseng Pyon, Takahiro Suwa, Akiyoshi Park, Hideki Kajitani, Norikiyo Koizumi, Yuji Tsuchiya, Satoshi Awaji, Kazuo Watanabe, Tsuyoshi Tamegai

IMR - High Field Laboratory for Superconducting Materials

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

42 Citations (Scopus)

Abstract

(Ba,K)Fe₂As₂ superconducting wires and tapes are fabricated by using hot isostatic pressing (HIP) technique, and their superconducting properties are studied. In the HIP round wire, transport critical current density (J _c) at 4.2 K has achieved record-high value of 175 kA cm^-2 at zero field, and exceeds 20 kA cm^-2 even at 100 kOe. Improvement of polycrystalline powder synthesis may play a key role for the enhancement of J _c. In the HIP tape, even larger transport J _c of 380 kA cm^-2 is realized at zero field. Based on magnetization and magneto-optical measurements, possible further enhancement of J _c is discussed.

Original language	English
Article number	115002
Journal	Superconductor Science and Technology
Volume	29
Issue number	11
DOIs	https://doi.org/10.1088/0953-2048/29/11/115002
Publication status	Published - 2016 Sept 26

Keywords

(Ba,K)FeAs
Superconducting wires and tapes
critical current density
hot isostatic pressing (HIP)
powder-intube (PIT)

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10.1088/0953-2048/29/11/115002

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title = "Enhancement of critical current densities in (Ba,K)Fe2As2 wires and tapes using HIP technique",

abstract = "(Ba,K)Fe2As2 superconducting wires and tapes are fabricated by using hot isostatic pressing (HIP) technique, and their superconducting properties are studied. In the HIP round wire, transport critical current density (J c) at 4.2 K has achieved record-high value of 175 kA cm-2 at zero field, and exceeds 20 kA cm-2 even at 100 kOe. Improvement of polycrystalline powder synthesis may play a key role for the enhancement of J c. In the HIP tape, even larger transport J c of 380 kA cm-2 is realized at zero field. Based on magnetization and magneto-optical measurements, possible further enhancement of J c is discussed.",

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T1 - Enhancement of critical current densities in (Ba,K)Fe2As2 wires and tapes using HIP technique

AU - Pyon, Sunseng

AU - Suwa, Takahiro

AU - Park, Akiyoshi

AU - Kajitani, Hideki

AU - Koizumi, Norikiyo

AU - Tsuchiya, Yuji

AU - Awaji, Satoshi

AU - Watanabe, Kazuo

AU - Tamegai, Tsuyoshi

PY - 2016/9/26

Y1 - 2016/9/26

N2 - (Ba,K)Fe2As2 superconducting wires and tapes are fabricated by using hot isostatic pressing (HIP) technique, and their superconducting properties are studied. In the HIP round wire, transport critical current density (J c) at 4.2 K has achieved record-high value of 175 kA cm-2 at zero field, and exceeds 20 kA cm-2 even at 100 kOe. Improvement of polycrystalline powder synthesis may play a key role for the enhancement of J c. In the HIP tape, even larger transport J c of 380 kA cm-2 is realized at zero field. Based on magnetization and magneto-optical measurements, possible further enhancement of J c is discussed.

AB - (Ba,K)Fe2As2 superconducting wires and tapes are fabricated by using hot isostatic pressing (HIP) technique, and their superconducting properties are studied. In the HIP round wire, transport critical current density (J c) at 4.2 K has achieved record-high value of 175 kA cm-2 at zero field, and exceeds 20 kA cm-2 even at 100 kOe. Improvement of polycrystalline powder synthesis may play a key role for the enhancement of J c. In the HIP tape, even larger transport J c of 380 kA cm-2 is realized at zero field. Based on magnetization and magneto-optical measurements, possible further enhancement of J c is discussed.

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KW - Superconducting wires and tapes

KW - critical current density

KW - hot isostatic pressing (HIP)

KW - powder-intube (PIT)

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Enhancement of critical current densities in (Ba,K)Fe₂As₂ wires and tapes using HIP technique

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Keywords

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