The effect of SiC nanoparticle addition on the flux pinning properties of MgB2

K. J. Song; C. Park; S. Kang

doi:10.1016/j.physc.2010.03.017

The effect of SiC nanoparticle addition on the flux pinning properties of MgB₂

K. J. Song
, C. Park
, S. Kang^*

^*Corresponding author for this work

Seoul National University

Research output: Contribution to journal › Journal article › peer-review

6 Scopus citations

Abstract

The nanoparticle-MgB₂ composite superconducting sample, (SiC)_4wt.%(MgB₂)_96wt.% ((SiC)₄-MgB₂), was prepared, and the effect of nanoparticle additions on the magnetic flux pinning was investigated. The measurement and comparison of isothermal magnetization M(H), for pure-MgB₂ powder and sintered pellets of (SiC)₄-MgB₂ and pure-MgB₂ were carried out at temperatures between 5 and 50 K in fields up to 8.5 T. The magnetic irreversibility ΔM(H) curves of the (SiC)₄-MgB₂ follow almost identical lines of both pure-MgB₂ powder and sintered bulk MgB₂ in the region above a specific magnetic field (called a merged field), which gradually decreases as the temperature increases. The (SiC)₄-MgB₂ composite superconductor has exhibited the flux pinning effect which comes from both the grain boundaries and the point defect weak pinning centers in the region below the merged field line. This is different from the case of pure-MgB₂ powder and sintered bulk MgB₂ which showed mostly the grain boundaries pinning.

Original language	English
Pages (from-to)	470-474
Number of pages	5
Journal	Physica C: Superconductivity and its Applications
Volume	470
Issue number	11-12
DOIs	https://doi.org/10.1016/j.physc.2010.03.017
State	Published - 2010.06.1

Keywords

Magnetic flux
Magnetization
MgB
Pinning effect

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Electrical & Electronic
Engineering - Petroleum
Physics & Astronomy

Access to Document

10.1016/j.physc.2010.03.017

Cite this

@article{8ed20af671474db193e7d2c713abc9c1,

title = "The effect of SiC nanoparticle addition on the flux pinning properties of MgB2",

abstract = "The nanoparticle-MgB2 composite superconducting sample, (SiC)4wt.\%(MgB2)96wt.\% ((SiC)4-MgB2), was prepared, and the effect of nanoparticle additions on the magnetic flux pinning was investigated. The measurement and comparison of isothermal magnetization M(H), for pure-MgB2 powder and sintered pellets of (SiC)4-MgB2 and pure-MgB2 were carried out at temperatures between 5 and 50 K in fields up to 8.5 T. The magnetic irreversibility ΔM(H) curves of the (SiC)4-MgB2 follow almost identical lines of both pure-MgB2 powder and sintered bulk MgB2 in the region above a specific magnetic field (called a merged field), which gradually decreases as the temperature increases. The (SiC)4-MgB2 composite superconductor has exhibited the flux pinning effect which comes from both the grain boundaries and the point defect weak pinning centers in the region below the merged field line. This is different from the case of pure-MgB2 powder and sintered bulk MgB2 which showed mostly the grain boundaries pinning.",

keywords = "Magnetic flux, Magnetization, MgB, Pinning effect",

author = "Song, \{K. J.\} and C. Park and S. Kang",

year = "2010",

month = jun,

day = "1",

doi = "10.1016/j.physc.2010.03.017",

language = "English",

volume = "470",

pages = "470--474",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

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TY - JOUR

T1 - The effect of SiC nanoparticle addition on the flux pinning properties of MgB2

AU - Song, K. J.

AU - Park, C.

AU - Kang, S.

PY - 2010/6/1

Y1 - 2010/6/1

N2 - The nanoparticle-MgB2 composite superconducting sample, (SiC)4wt.%(MgB2)96wt.% ((SiC)4-MgB2), was prepared, and the effect of nanoparticle additions on the magnetic flux pinning was investigated. The measurement and comparison of isothermal magnetization M(H), for pure-MgB2 powder and sintered pellets of (SiC)4-MgB2 and pure-MgB2 were carried out at temperatures between 5 and 50 K in fields up to 8.5 T. The magnetic irreversibility ΔM(H) curves of the (SiC)4-MgB2 follow almost identical lines of both pure-MgB2 powder and sintered bulk MgB2 in the region above a specific magnetic field (called a merged field), which gradually decreases as the temperature increases. The (SiC)4-MgB2 composite superconductor has exhibited the flux pinning effect which comes from both the grain boundaries and the point defect weak pinning centers in the region below the merged field line. This is different from the case of pure-MgB2 powder and sintered bulk MgB2 which showed mostly the grain boundaries pinning.

AB - The nanoparticle-MgB2 composite superconducting sample, (SiC)4wt.%(MgB2)96wt.% ((SiC)4-MgB2), was prepared, and the effect of nanoparticle additions on the magnetic flux pinning was investigated. The measurement and comparison of isothermal magnetization M(H), for pure-MgB2 powder and sintered pellets of (SiC)4-MgB2 and pure-MgB2 were carried out at temperatures between 5 and 50 K in fields up to 8.5 T. The magnetic irreversibility ΔM(H) curves of the (SiC)4-MgB2 follow almost identical lines of both pure-MgB2 powder and sintered bulk MgB2 in the region above a specific magnetic field (called a merged field), which gradually decreases as the temperature increases. The (SiC)4-MgB2 composite superconductor has exhibited the flux pinning effect which comes from both the grain boundaries and the point defect weak pinning centers in the region below the merged field line. This is different from the case of pure-MgB2 powder and sintered bulk MgB2 which showed mostly the grain boundaries pinning.

KW - Magnetic flux

KW - Magnetization

KW - MgB

KW - Pinning effect

UR - https://www.scopus.com/pages/publications/77953134424

U2 - 10.1016/j.physc.2010.03.017

DO - 10.1016/j.physc.2010.03.017

M3 - Journal article

AN - SCOPUS:77953134424

SN - 0921-4534

VL - 470

SP - 470

EP - 474

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

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