Magnetization of α′ iron nitride produced through the fcc→bct martensitic transformation in high magnetic field

Abstract

The γ iron nitride (nitrogen austenite) was subjected to high magnetic field process in order to drive the fcc→bct martensitic transformation. Molar fraction of martensite monotonically increased with increasing the magnetic field and reached 94% at 35 T. With a combination of magnetization and 57Fe Mössbauer spectroscopy data, magnetization of bulk processed α′ phase with 9.6 at. % N is determined to be 229 emu/g, the same as that for dc sputtered thin films. © 2006 American Institute of Physics.