Superconductivity at 7.3 K in Ti2InN

Abstract

a b s t r a c tIn this work the Ti 2 InN 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 2 AlC 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

Ab Initio Investigation of Nitride in Comparison with Carbide Phase of Superconducting InX (X = C, N)

“…Further calculations show that the nitride phase has higher density of states at Fermi level than that of carbide phase. All these point to the role of N atom in changing the electronic structure and the possible transport properties which were the motivation of Bortolozo et al [10] to seek superconductivity in nitride phase. ese motivate us to revisit the system Ti 2 InX (X = C, N) and investigate further the in�uence of the substitution of N for C on the M 2 AX nanolaminates.…”

“…Out of these only seven lowsuperconductors have so far been identi�ed. ese are Mo 2 GaC [4], Nb 2 SC [5], Nb 2 SnC [6], Nb 2 AsC [7], Ti 2 InC [8], Nb 2 InC [9], and Ti 2 InN [10].…”

“…e X-ray diffraction, magnetic, and resistivity measurements discovered that Ti 2 InX (X = C, N) are superconductors [8,10] with superconducting temperatures of 3.1 and 7.3 K, respectively. In fact Bortolozo et al [10] in 2010 showed unambiguously that Ti 2 InN is the �rst nitride superconductor belonging to the M AX family.…”

“…In fact Bortolozo et al [10] in 2010 showed unambiguously that Ti 2 InN is the �rst nitride superconductor belonging to the M AX family. Among the ternary phases almost all the studies are concerned with carbide properties, but a very limited work on nitrides which was discovered in 1963 by Jeitschko et al [12].…”

New MAX Phase Superconductor Ti₂GeC: A First-principles Study

“…To date, among more than 70 synthesized MAX phases [3], bulk superconductivity was discovered for seven systems: Mo 2 GaC [4], Nb 2 SC [5], Nb 2 SnC [6], Nb 2 AsC [7], Ti 2 InC [8], Nb 2 InC [9], and Ti 2 InN [10]. Very recently, a superconducting transition at T C ~ 9.5 K was reported for the eighth MAX phase -Ti 2 GeC [1].…”