Phase formation, thermal stability and magnetic moment of cobalt nitride thin films

الأصل · EN

Cobalt nitride (Co-N) thin films prepared using a reactive magnetron sputtering process by varying the relative nitrogen gas flow () are studied in this work. As increases, Co(N),, Co₃N and CoN phases are formed. An incremental increase in, after emergence of phase at =10, results in a continuous expansion in the lattice constant (a) of. For =30, a maximizes and becomes comparable to its theoretical value. An expansion in a of, results in an enhancement of magnetic moment, to the extent that it becomes even larger than pure Co. Though such higher (than pure metal) magnetic moment for Fe₄N thin films have been theoretically predicted and evidenced experimentally, higher (than pure Co) magnetic moment are evidenced in this work and explained in terms of large-volume high-moment model for tetra metal nitrides.