Conventional superconductivity properties of the ternary boron-nitride Nb2BN

The superconducting bulk properties of ternary Nb2BN are confirmed and described by means of magnetization, electronic transport and specific heat measurements. BCS conventional superconductivity is found with Tc = 4.4 K. Critical fields of Hc1(0) = 93 Oe and Hc2(0) = 2082 Oe are extrapolated by magnetic and resistivity measurements. The specific heat data reveal γ = 6.3 mJ mol−1 K−2 and β = 0.293 mJ mol−1 K−4, in good agreement with the BCS theory.