Improvement of high-field Jc of MgB2 wires by polymethyl-methacrylate doping

G. C. Park; S. M. Hwang; C. M. Lee; J. H. Choi; J. Joo; J. H. Lim; W. N. Kang; C. J. Kim

doi:10.1016/j.physc.2010.03.016

Improvement of high-field J_c of MgB₂ wires by polymethyl-methacrylate doping

G. C. Park
, S. M. Hwang
, C. M. Lee
, J. H. Choi
, J. Joo
, J. H. Lim
, W. N. Kang
, C. J. Kim

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

6 Scopus citations

Abstract

We applied polymethyl-methacrylate (PMMA) as a new doping material for MgB₂ and fabricated C-doped MgB₂ wires by in situ powder-in-tube (PIT) process. With increasing PMMA doping level, the transition temperature (T_c) decreased and the MgO content increased, whereas the magnetic field dependence of the critical current density (J_c) weakened. The MgB₂ wires doped with 3-10 wt.% PMMA showed significantly higher J_c by more than one order of magnitude than that of the undoped wire at 5 K and 6.6 T. These results confirmed the potential of PMMA as a promising material for the effective substitution of B by C in MgB₂.

Original language	English
Pages (from-to)	S1034-S1035
Journal	Physica C: Superconductivity and its Applications
Volume	470
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.physc.2010.03.016
State	Published - Dec 2010

Keywords

Carbon doping
Critical current density
MgB
Polymethyl- methacrylate

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10.1016/j.physc.2010.03.016

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@article{026295e379364f6fa4ec9ee46b6aaa12,

title = "Improvement of high-field Jc of MgB2 wires by polymethyl-methacrylate doping",

abstract = "We applied polymethyl-methacrylate (PMMA) as a new doping material for MgB2 and fabricated C-doped MgB2 wires by in situ powder-in-tube (PIT) process. With increasing PMMA doping level, the transition temperature (Tc) decreased and the MgO content increased, whereas the magnetic field dependence of the critical current density (Jc) weakened. The MgB2 wires doped with 3-10 wt.\% PMMA showed significantly higher Jc by more than one order of magnitude than that of the undoped wire at 5 K and 6.6 T. These results confirmed the potential of PMMA as a promising material for the effective substitution of B by C in MgB2.",

keywords = "Carbon doping, Critical current density, MgB, Polymethyl- methacrylate",

author = "Park, \{G. C.\} and Hwang, \{S. M.\} and Lee, \{C. M.\} and Choi, \{J. H.\} and J. Joo and Lim, \{J. H.\} and Kang, \{W. N.\} and Kim, \{C. J.\}",

year = "2010",

month = dec,

doi = "10.1016/j.physc.2010.03.016",

language = "English",

volume = "470",

pages = "S1034--S1035",

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

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "SUPPL.1",

}

TY - JOUR

T1 - Improvement of high-field Jc of MgB2 wires by polymethyl-methacrylate doping

AU - Park, G. C.

AU - Hwang, S. M.

AU - Lee, C. M.

AU - Choi, J. H.

AU - Joo, J.

AU - Lim, J. H.

AU - Kang, W. N.

AU - Kim, C. J.

PY - 2010/12

Y1 - 2010/12

N2 - We applied polymethyl-methacrylate (PMMA) as a new doping material for MgB2 and fabricated C-doped MgB2 wires by in situ powder-in-tube (PIT) process. With increasing PMMA doping level, the transition temperature (Tc) decreased and the MgO content increased, whereas the magnetic field dependence of the critical current density (Jc) weakened. The MgB2 wires doped with 3-10 wt.% PMMA showed significantly higher Jc by more than one order of magnitude than that of the undoped wire at 5 K and 6.6 T. These results confirmed the potential of PMMA as a promising material for the effective substitution of B by C in MgB2.

AB - We applied polymethyl-methacrylate (PMMA) as a new doping material for MgB2 and fabricated C-doped MgB2 wires by in situ powder-in-tube (PIT) process. With increasing PMMA doping level, the transition temperature (Tc) decreased and the MgO content increased, whereas the magnetic field dependence of the critical current density (Jc) weakened. The MgB2 wires doped with 3-10 wt.% PMMA showed significantly higher Jc by more than one order of magnitude than that of the undoped wire at 5 K and 6.6 T. These results confirmed the potential of PMMA as a promising material for the effective substitution of B by C in MgB2.

KW - Carbon doping

KW - Critical current density

KW - MgB

KW - Polymethyl- methacrylate

UR - https://www.scopus.com/pages/publications/78649718109

U2 - 10.1016/j.physc.2010.03.016

DO - 10.1016/j.physc.2010.03.016

M3 - Article

AN - SCOPUS:78649718109

SN - 0921-4534

VL - 470

SP - S1034-S1035

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - SUPPL.1

ER -

Improvement of high-field J_c of MgB₂ wires by polymethyl-methacrylate doping

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Keywords

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