Magnetic Properties of Transition Metal Nitride--Synthesis of Iron Nitride by High-Dose Nitrogen Ion Implantation--

1 December 1985

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Translation Journal on Magnetics in Japan

Vol. 1 (9) , 1069-1070
https://doi.org/10.1109/tjmj.1985.4549071

Abstract

Nitrogen ions (N2+) were implanted into pure iron films in an attempt to produce Fe16N2 and other iron nitride phases. Ions were implanted at 150 keV and dosages were ranged from 2 × 1016 to 2.11 × 1017 ions/cm2, and magnetization measurements and X-ray diffraction studies performed. Ferromagnetic Fe3N and Fe4N phases were found intermixed with the α-Fe, but there was no evidence of Fe16N2. The saturation magnetization decreased slowly with increasing dosage, but dropped abruptly by 40 percent at the highest dose, due to the formation of a paramagnetic Fe2N phase. This method is suggested as a means of improving iron surface properties without greatly degrading the magnetic properties.

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