Abstract

Iron nitride thin films with perpendicular magnetic anisotropy were prepared by ion-assisted vapor deposition. The films exhibited a large perpendicular magnetic anisotropy field (above 2.5 kOe). A columnar structure was found to grow normal to the substrate. The films consisted of paramagnetic ζ-Fe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> N and ε-Fe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2-3</sub> N phases and ferromagnetic α-Fe and γ'-Fe <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> N phases. The perpendicular anisotropy may be attributed mainly to the shape anisotropy of the perpendicularly oriented columnar structure and to the magnetic separation effect due to segregation of paramagnetic components along each column. It was also found that a large perpendicular anisotropy is obtained more easily by irradiation with a nitrogen ion beam at low angles such as 10° to 30° from the substrate, rather than at large angles such as 70°.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.