Laser nitriding of niobium produces controllable beta-Nb2N and gamma-Nb4N3 phases that deliver fourfold surface hardness gains at low fluence and raise superconducting critical temperature to 15 K when gamma phase dominates.
Superconducting niobium nitride: A perspective from processing, microstructure, and superconducting property for single photon detectors
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Laser induced surface nitriding of niobium: phase evolution and superconducting behaviour
Laser nitriding of niobium produces controllable beta-Nb2N and gamma-Nb4N3 phases that deliver fourfold surface hardness gains at low fluence and raise superconducting critical temperature to 15 K when gamma phase dominates.