Carbon miscibility in the boron layers of the MgB2 superconductor

I. Maurin; S. Margadonna; K. Prassides; T. Takenobu; Y. Iwasa; A. N. Fitch

doi:10.1021/cm020308k

Carbon miscibility in the boron layers of the MgB₂ superconductor

I. Maurin, S. Margadonna^*, K. Prassides, T. Takenobu, Y. Iwasa, A. N. Fitch

^*Corresponding author for this work

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

22 Citations (Scopus)

Abstract

A detailed structural analysis of the MgB_2-xC_x series at low doping levels (0 ≤ x ≤ 0.1) is presented. High-resolution synchrotron x-ray powder diffraction experiments show an extremely small miscibility of carbon within the boron sheets despite the structural analogy between MgB₂ and graphite. Multiphase behavior is detected for x ≥ 0.04. The coexisting phases, isostructural with the parent MgB₂ compound, differ mainly in their in-plane lattice constants, as evidenced by the splitting of the (hk0) Bragg reflections. All phases contain carbon in substitution for boron but in different concentrations.

Original language	English
Pages (from-to)	3894-3897
Number of pages	4
Journal	Chemistry of Materials
Volume	14
Issue number	9
DOIs	https://doi.org/10.1021/cm020308k
Publication status	Published - 2002 Sept
Externally published	Yes

ASJC Scopus subject areas

Materials Chemistry
Materials Science(all)

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10.1021/cm020308k

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abstract = "A detailed structural analysis of the MgB2-xCx series at low doping levels (0 ≤ x ≤ 0.1) is presented. High-resolution synchrotron x-ray powder diffraction experiments show an extremely small miscibility of carbon within the boron sheets despite the structural analogy between MgB2 and graphite. Multiphase behavior is detected for x ≥ 0.04. The coexisting phases, isostructural with the parent MgB2 compound, differ mainly in their in-plane lattice constants, as evidenced by the splitting of the (hk0) Bragg reflections. All phases contain carbon in substitution for boron but in different concentrations.",

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AU - Maurin, I.

AU - Margadonna, S.

AU - Prassides, K.

AU - Takenobu, T.

AU - Iwasa, Y.

AU - Fitch, A. N.

PY - 2002/9

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N2 - A detailed structural analysis of the MgB2-xCx series at low doping levels (0 ≤ x ≤ 0.1) is presented. High-resolution synchrotron x-ray powder diffraction experiments show an extremely small miscibility of carbon within the boron sheets despite the structural analogy between MgB2 and graphite. Multiphase behavior is detected for x ≥ 0.04. The coexisting phases, isostructural with the parent MgB2 compound, differ mainly in their in-plane lattice constants, as evidenced by the splitting of the (hk0) Bragg reflections. All phases contain carbon in substitution for boron but in different concentrations.

AB - A detailed structural analysis of the MgB2-xCx series at low doping levels (0 ≤ x ≤ 0.1) is presented. High-resolution synchrotron x-ray powder diffraction experiments show an extremely small miscibility of carbon within the boron sheets despite the structural analogy between MgB2 and graphite. Multiphase behavior is detected for x ≥ 0.04. The coexisting phases, isostructural with the parent MgB2 compound, differ mainly in their in-plane lattice constants, as evidenced by the splitting of the (hk0) Bragg reflections. All phases contain carbon in substitution for boron but in different concentrations.

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Carbon miscibility in the boron layers of the MgB₂ superconductor

Abstract

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