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

24 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 1
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

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AU - Yamamoto, A.

AU - Uchiyama, H.

AU - Tajima, S.

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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.

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KW - Resistivity

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