Temperature dependence of the structural parameters of the non-oxide perovskite superconductor MgCNi3

Q. Huang, T. He, K. A. Regan, N. Rogado, M. Hayward, M. K. Haas, K. Inumaru, R. J. Cava

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26 Scopus citations

Abstract

We report the structural parameters of superconducting MgCxNi3 (x=0.96, Tc=7.3 K) as a function of temperature, from 2 to 295 K, determined by neutron powder diffraction profile refinement. The compound has the perovskite structure over the whole temperature range, with symmetry Pm3̄m and a=3.81221(5) Å at 295 K: no structural or long range magnetic ordering transitions were observed. The lattice parameter a and the Debye-Waller factors for the individual atoms decrease smoothly with decreasing temperature. There are no unusual changes of the structural parameters near Tc.

Original languageEnglish (US)
Pages (from-to)215-218
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume363
Issue number4
DOIs
StatePublished - Dec 1 2001

All Science Journal Classification (ASJC) codes

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

Keywords

  • Neutron powder diffraction
  • No-oxide perovskite
  • Structure parameters

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