Carbon-substitution effect on superconducting properties in MgB2 single crystals

T. Masui; S. Lee; A. Yamamoto; H. Uchiyama; S. Tajima

doi:10.1016/j.physc.2003.11.074

Carbon-substitution effect on superconducting properties in MgB₂ single crystals

T. Masui, S. Lee, A. Yamamoto, H. Uchiyama, S. Tajima

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

25 Citations (Scopus)

Abstract

The superconducting properties of carbon-substituted MgB₂ single crystals are studied. We found that C-substitution modifies superconducting properties such as anisotropy and irreversibility field. The highest H _c2 can be achieved by the C-substitution around 3-5% per B-atom. In the superconductivity transition, the resistivity is almost ohmic; this is remarkable contrast to the case of C-free crystals.

Original language	English
Pages (from-to)	303-306
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	412-414
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2003.11.074
Publication status	Published - 2004 Oct
Externally published	Yes

Keywords

Anisotropy
Carbon-substitution
MgB
Resistivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/j.physc.2003.11.074

Cite this

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title = "Carbon-substitution effect on superconducting properties in MgB2 single crystals",

abstract = "The superconducting properties of carbon-substituted MgB2 single crystals are studied. We found that C-substitution modifies superconducting properties such as anisotropy and irreversibility field. The highest H c2 can be achieved by the C-substitution around 3-5% per B-atom. In the superconductivity transition, the resistivity is almost ohmic; this is remarkable contrast to the case of C-free crystals.",

keywords = "Anisotropy, Carbon-substitution, MgB, Resistivity",

author = "T. Masui and S. Lee and A. Yamamoto and H. Uchiyama and S. Tajima",

note = "Funding Information: This work is supported by New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications. T.M. and H.U. are supported by the JSPS Research Fellowships for Young Scientists. ",

year = "2004",

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doi = "10.1016/j.physc.2003.11.074",

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

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T1 - Carbon-substitution effect on superconducting properties in MgB2 single crystals

AU - Masui, T.

AU - Lee, S.

AU - Yamamoto, A.

AU - Uchiyama, H.

AU - Tajima, S.

N1 - Funding Information: This work is supported by New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications. T.M. and H.U. are supported by the JSPS Research Fellowships for Young Scientists.

PY - 2004/10

Y1 - 2004/10

N2 - The superconducting properties of carbon-substituted MgB2 single crystals are studied. We found that C-substitution modifies superconducting properties such as anisotropy and irreversibility field. The highest H c2 can be achieved by the C-substitution around 3-5% per B-atom. In the superconductivity transition, the resistivity is almost ohmic; this is remarkable contrast to the case of C-free crystals.

AB - The superconducting properties of carbon-substituted MgB2 single crystals are studied. We found that C-substitution modifies superconducting properties such as anisotropy and irreversibility field. The highest H c2 can be achieved by the C-substitution around 3-5% per B-atom. In the superconductivity transition, the resistivity is almost ohmic; this is remarkable contrast to the case of C-free crystals.

KW - Anisotropy

KW - Carbon-substitution

KW - MgB

KW - Resistivity

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