Carbon concentration dependence of the superconducting transition temperature and structure of MgCxNi3

T. G. Amos; Q. Huang; J. W. Lynn; T. He; R. J. Cava

doi:10.1016/S0038-1098(01)00470-7

Carbon concentration dependence of the superconducting transition temperature and structure of MgC_xNi₃

T. G. Amos, Q. Huang, J. W. Lynn, T. He, R. J. Cava

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

60 Scopus citations

Abstract

The crystal structure of the superconductor MgC_xNi₃ is reported as a function of carbon concentration determined by powder neutron diffraction. The single-phase perovskite structure was found in only a narrow range of carbon content, 0.88 < x < 1.0. The superconducting transition temperature was found to decrease systematically with decreasing carbon concentration. The introduction of carbon vacancies has a significant effect on the positions of the Ni atoms. No evidence for long-range magnetic ordering was seen by neutron diffraction for carbon stoichiometries within the perovskite phase stability range.

Original language	English (US)
Pages (from-to)	73-77
Number of pages	5
Journal	Solid State Communications
Volume	121
Issue number	2-3
DOIs	https://doi.org/10.1016/S0038-1098(01)00470-7
State	Published - Jan 2 2002

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Materials Chemistry

Keywords

A. Superconductors
E. Neutron scattering

Access to Document

10.1016/S0038-1098(01)00470-7

Cite this

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title = "Carbon concentration dependence of the superconducting transition temperature and structure of MgCxNi3",

abstract = "The crystal structure of the superconductor MgCxNi3 is reported as a function of carbon concentration determined by powder neutron diffraction. The single-phase perovskite structure was found in only a narrow range of carbon content, 0.88 < x < 1.0. The superconducting transition temperature was found to decrease systematically with decreasing carbon concentration. The introduction of carbon vacancies has a significant effect on the positions of the Ni atoms. No evidence for long-range magnetic ordering was seen by neutron diffraction for carbon stoichiometries within the perovskite phase stability range.",

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T1 - Carbon concentration dependence of the superconducting transition temperature and structure of MgCxNi3

AU - Amos, T. G.

AU - Huang, Q.

AU - Lynn, J. W.

AU - He, T.

AU - Cava, R. J.

PY - 2002/1/2

Y1 - 2002/1/2

N2 - The crystal structure of the superconductor MgCxNi3 is reported as a function of carbon concentration determined by powder neutron diffraction. The single-phase perovskite structure was found in only a narrow range of carbon content, 0.88 < x < 1.0. The superconducting transition temperature was found to decrease systematically with decreasing carbon concentration. The introduction of carbon vacancies has a significant effect on the positions of the Ni atoms. No evidence for long-range magnetic ordering was seen by neutron diffraction for carbon stoichiometries within the perovskite phase stability range.

AB - The crystal structure of the superconductor MgCxNi3 is reported as a function of carbon concentration determined by powder neutron diffraction. The single-phase perovskite structure was found in only a narrow range of carbon content, 0.88 < x < 1.0. The superconducting transition temperature was found to decrease systematically with decreasing carbon concentration. The introduction of carbon vacancies has a significant effect on the positions of the Ni atoms. No evidence for long-range magnetic ordering was seen by neutron diffraction for carbon stoichiometries within the perovskite phase stability range.

KW - A. Superconductors

KW - E. Neutron scattering

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U2 - 10.1016/S0038-1098(01)00470-7

DO - 10.1016/S0038-1098(01)00470-7

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VL - 121

SP - 73

EP - 77

JO - Solid State Communications

JF - Solid State Communications

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