Superconductivity in Nb2InC

In this work the Nb2InC phase is investigated by X-ray diffraction, heat capacity, magnetic and resistivity measurements. Polycrystalline samples with Nb2InC nominal compositions were prepared by solid state reaction. X-ray powder patterns suggest that all peaks can be indexed with the hexagonal pha...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2009-04, Vol.469 (7-8), p.256-258
Main Authors: BORTOLOZO, A. D, FISK, Z, SANT'ANNA, O. H, DOS SANTOS, C. A. M, MACHADO, A. J. S
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Metals, alloys and compounds (a15, 001c15, laves phases, chevrel phases, borocarbides, etc.)
Physics
Superconducting materials (excluding high-tc compounds)
Superconductivity
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Summary:In this work the Nb2InC phase is investigated by X-ray diffraction, heat capacity, magnetic and resistivity measurements. Polycrystalline samples with Nb2InC nominal compositions were prepared by solid state reaction. X-ray powder patterns suggest that all peaks can be indexed with the hexagonal phase of Cr2AlC prototype. The electrical resistance as a function of temperature for Nb2InC shows superconducting behavior below 7.5 K. The M(H) data show typical type-II superconductivity with HC1 90 Oe at 1.8 K. The specific heat data are consistent with bulk superconductivity. The Sommerfeld constant is estimated as gamma 12.6 mJ mol-1 K-1.
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2009.02.005