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

doi:10.1016/S0921-4534(01)01068-1

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

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

28 Scopus citations

Abstract

We report the structural parameters of superconducting MgC_xNi₃ (x=0.96, T_c=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 T_c.

Original language	English (US)
Pages (from-to)	215-218
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	363
Issue number	4
DOIs	https://doi.org/10.1016/S0921-4534(01)01068-1
State	Published - 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

Access to Document

10.1016/S0921-4534(01)01068-1

Cite this

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title = "Temperature dependence of the structural parameters of the non-oxide perovskite superconductor MgCNi3",

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 Pm{\=3}m and a=3.81221(5) {\AA} 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.",

keywords = "Neutron powder diffraction, No-oxide perovskite, Structure parameters",

author = "Q. Huang and T. He and Regan, {K. A.} and N. Rogado and M. Hayward and Haas, {M. K.} and K. Inumaru and Cava, {R. J.}",

note = "Funding Information: The work at Princeton was supported by the National Science Foundation, and the Department of Energy, Office of Basic Energy Sciences. ",

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T1 - Temperature dependence of the structural parameters of the non-oxide perovskite superconductor MgCNi3

AU - Huang, Q.

AU - He, T.

AU - Regan, K. A.

AU - Rogado, N.

AU - Hayward, M.

AU - Haas, M. K.

AU - Inumaru, K.

AU - Cava, R. J.

N1 - Funding Information: The work at Princeton was supported by the National Science Foundation, and the Department of Energy, Office of Basic Energy Sciences.

PY - 2001/12/1

Y1 - 2001/12/1

N2 - 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.

AB - 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.

KW - Neutron powder diffraction

KW - No-oxide perovskite

KW - Structure parameters

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