Figure 3
From: Discovery of Superconductivity in Hard Hexagonal ε-NbN

(A) Temperature dependence of the normalized magnetization M/M20 K of bulk polycrystalline hexagonal ε-NbN at ambient pressure. (B) Electrical resistivity of the hexagonal ε-NbN specimen as a function of temperature at ambient pressure. The data are normalized to the values at 20 K (arrows show the superconducting transition points).