Crystal growth of C-doped MgB2 superconductors: Accidental doping and inhomogeneity

Sergey Lee; Takahiko Masui; Ayako Yamamoto; Hiroshi Uchiyama; Setsuko Tajima

doi:10.1016/j.physc.2004.01.036

Crystal growth of C-doped MgB₂ superconductors: Accidental doping and inhomogeneity

Sergey Lee, Takahiko Masui, Ayako Yamamoto, Hiroshi Uchiyama, Setsuko Tajima

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

75 Citations (Scopus)

Abstract

Here, we discuss the possibility of accidental C-doping of MgB₂ crystals and inhomogeneous C distribution of Mg(B_1-xC _x)₂ single crystals with x=0.02-0.125 grown under high pressure. Structure refinement was performed on the heavily C-doped crystal with x=0.125 which has confirmed no evidence of microscopic phase separation. Resistivity and magnetization measurements were also preformed on several of as-grown and post-annealed crystals with a inhomogeneous C distribution.

Original language	English
Pages (from-to)	31-35
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	412-414
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2004.01.036
Publication status	Published - 2004 Oct 1
Externally published	Yes

Keywords

Carbon doping
Chemical inhomogeneity
Crystals structure
Magnesium diboride

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.2004.01.036

Cite this

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title = "Crystal growth of C-doped MgB2 superconductors: Accidental doping and inhomogeneity",

abstract = "Here, we discuss the possibility of accidental C-doping of MgB2 crystals and inhomogeneous C distribution of Mg(B1-xC x)2 single crystals with x=0.02-0.125 grown under high pressure. Structure refinement was performed on the heavily C-doped crystal with x=0.125 which has confirmed no evidence of microscopic phase separation. Resistivity and magnetization measurements were also preformed on several of as-grown and post-annealed crystals with a inhomogeneous C distribution.",

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AU - Lee, Sergey

AU - Masui, Takahiko

AU - Yamamoto, Ayako

AU - Uchiyama, Hiroshi

AU - Tajima, Setsuko

PY - 2004/10/1

Y1 - 2004/10/1

N2 - Here, we discuss the possibility of accidental C-doping of MgB2 crystals and inhomogeneous C distribution of Mg(B1-xC x)2 single crystals with x=0.02-0.125 grown under high pressure. Structure refinement was performed on the heavily C-doped crystal with x=0.125 which has confirmed no evidence of microscopic phase separation. Resistivity and magnetization measurements were also preformed on several of as-grown and post-annealed crystals with a inhomogeneous C distribution.

AB - Here, we discuss the possibility of accidental C-doping of MgB2 crystals and inhomogeneous C distribution of Mg(B1-xC x)2 single crystals with x=0.02-0.125 grown under high pressure. Structure refinement was performed on the heavily C-doped crystal with x=0.125 which has confirmed no evidence of microscopic phase separation. Resistivity and magnetization measurements were also preformed on several of as-grown and post-annealed crystals with a inhomogeneous C distribution.

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KW - Chemical inhomogeneity

KW - Crystals structure

KW - Magnesium diboride

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