Flux Pinning and Superconducting Properties of Bulk MgB2 with MgB4 Addition

Muralidhar Miryala; Sai Srikanth Arvapalli; Pavel Diko; Milos Jirsa; Masato Murakami

doi:10.1002/adem.201900750

Flux Pinning and Superconducting Properties of Bulk MgB₂ with MgB₄ Addition

Muralidhar Miryala, Sai Srikanth Arvapalli, Pavel Diko, Milos Jirsa, Masato Murakami

研究成果: Article › 査読

11 被引用数 (Scopus)

抄録

The improved performance of bulk MgB₂ material with added nanometer-sized MgB₄ particles is presented. Bulk polycrystalline MgB₂ samples with varying amount of MgB₄ x (x = 0, 1, 2, 3, 4, 5, and 10 wt%) are fabricated by solid-state sintering at 775 °C for 3 h in pure argon gas. Microstructural studies indicate formation of nanometer-sized grains when MgB₄ is added. Density of nano-grains is inversely proportional to the MgB₄ content. The MgB₂ sample with 1 wt% of MgB₄ shows the best performance, with its self-field critical current density reaching 385 and 315 kAcm⁻² at 15 and 20 K, respectively. Flux pinning diagrams reveal the domination of grain boundary pinning mechanism.

本文言語	English
論文番号	1900750
ジャーナル	Advanced Engineering Materials
巻	22
号	3
DOI	https://doi.org/10.1002/adem.201900750
出版ステータス	Published - 2020 3月 1

ASJC Scopus subject areas

材料科学（全般）
凝縮系物理学

文献へのアクセス

10.1002/adem.201900750

他のファイルとリンク

引用スタイル

@article{67c273e02fe84114bf772034d318a3e7,

title = "Flux Pinning and Superconducting Properties of Bulk MgB2 with MgB4 Addition",

abstract = "The improved performance of bulk MgB2 material with added nanometer-sized MgB4 particles is presented. Bulk polycrystalline MgB2 samples with varying amount of MgB4 x (x = 0, 1, 2, 3, 4, 5, and 10 wt%) are fabricated by solid-state sintering at 775 °C for 3 h in pure argon gas. Microstructural studies indicate formation of nanometer-sized grains when MgB4 is added. Density of nano-grains is inversely proportional to the MgB4 content. The MgB2 sample with 1 wt% of MgB4 shows the best performance, with its self-field critical current density reaching 385 and 315 kAcm−2 at 15 and 20 K, respectively. Flux pinning diagrams reveal the domination of grain boundary pinning mechanism.",

keywords = "MgB, MgB, flux pinning, grain refinement, improved J",

author = "Muralidhar Miryala and Arvapalli, {Sai Srikanth} and Pavel Diko and Milos Jirsa and Masato Murakami",

note = "Funding Information: This work was partly supported by Shibaura Institute of Technology (SIT) Research Center for Green Innovation and Grant-in-Aid FD research budget code: 112282. One of the authors (S.S.A.) acknowledges the financial support from SIT for his doctoral program. Funding Information: This work was partly supported by Shibaura Institute of Technology (SIT) Research Center for Green Innovation and Grant‐in‐Aid FD research budget code: 112282. One of the authors (S.S.A.) acknowledges support from SIT for providing the financial support for the doctoral program. Publisher Copyright: {\textcopyright} 2019 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2020",

month = mar,

day = "1",

doi = "10.1002/adem.201900750",

language = "English",

volume = "22",

journal = "Advanced Engineering Materials",

issn = "1438-1656",

publisher = "Wiley-VCH Verlag",

number = "3",

}

TY - JOUR

T1 - Flux Pinning and Superconducting Properties of Bulk MgB2 with MgB4 Addition

AU - Miryala, Muralidhar

AU - Arvapalli, Sai Srikanth

AU - Diko, Pavel

AU - Jirsa, Milos

AU - Murakami, Masato

N1 - Funding Information: This work was partly supported by Shibaura Institute of Technology (SIT) Research Center for Green Innovation and Grant-in-Aid FD research budget code: 112282. One of the authors (S.S.A.) acknowledges the financial support from SIT for his doctoral program. Funding Information: This work was partly supported by Shibaura Institute of Technology (SIT) Research Center for Green Innovation and Grant‐in‐Aid FD research budget code: 112282. One of the authors (S.S.A.) acknowledges support from SIT for providing the financial support for the doctoral program. Publisher Copyright: © 2019 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2020/3/1

Y1 - 2020/3/1

N2 - The improved performance of bulk MgB2 material with added nanometer-sized MgB4 particles is presented. Bulk polycrystalline MgB2 samples with varying amount of MgB4 x (x = 0, 1, 2, 3, 4, 5, and 10 wt%) are fabricated by solid-state sintering at 775 °C for 3 h in pure argon gas. Microstructural studies indicate formation of nanometer-sized grains when MgB4 is added. Density of nano-grains is inversely proportional to the MgB4 content. The MgB2 sample with 1 wt% of MgB4 shows the best performance, with its self-field critical current density reaching 385 and 315 kAcm−2 at 15 and 20 K, respectively. Flux pinning diagrams reveal the domination of grain boundary pinning mechanism.

AB - The improved performance of bulk MgB2 material with added nanometer-sized MgB4 particles is presented. Bulk polycrystalline MgB2 samples with varying amount of MgB4 x (x = 0, 1, 2, 3, 4, 5, and 10 wt%) are fabricated by solid-state sintering at 775 °C for 3 h in pure argon gas. Microstructural studies indicate formation of nanometer-sized grains when MgB4 is added. Density of nano-grains is inversely proportional to the MgB4 content. The MgB2 sample with 1 wt% of MgB4 shows the best performance, with its self-field critical current density reaching 385 and 315 kAcm−2 at 15 and 20 K, respectively. Flux pinning diagrams reveal the domination of grain boundary pinning mechanism.

KW - MgB

KW - flux pinning

KW - grain refinement

KW - improved J

UR - http://www.scopus.com/inward/record.url?scp=85074858833&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85074858833&partnerID=8YFLogxK

U2 - 10.1002/adem.201900750

DO - 10.1002/adem.201900750

M3 - Article

AN - SCOPUS:85074858833

SN - 1438-1656

VL - 22

JO - Advanced Engineering Materials

JF - Advanced Engineering Materials

IS - 3

M1 - 1900750

ER -