Superconductivity at 7.3 K in Ti2InN
Abstract
In this work the Ti2InN phase is investigated by X-ray diffraction, magnetic and resistivity measurements. X-ray powder patterns suggest that all peaks can be indexed with the hexagonal phase of Cr 2AlC prototype. Electrical resistance as a function of temperature reveals superconductivity below 7.3 K. M(H) hysteresis loops show typical type-II superconductivity. Using R(H) versus T measurements we estimated μoHc2(0)∼10.8T and ξ(0)∼55.2 Å. The results show unambiguously that Ti2InN is the first nitride superconductor belonging to the Mn+1AXn family. © 2010 Elsevier Ltd. All rights reserved.
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