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Magnetically soft, high moment grain-refined Fe films: application to magnetic tunnel junctions

Georgieva, MT, Telling, ND, Grundy, PJ, Faunce, CA and Jones, GA 2004, 'Magnetically soft, high moment grain-refined Fe films: application to magnetic tunnel junctions' , Journal of Applied Physics, 96 (5) , pp. 2923-2926.

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Abstract

The effect of N-doping on the microstructure and magnetic properties of thin Fe layers has been employed to construct all Fe-electrode magnetic tunnel junctions that displayed the tunneling magnetoresistance (TMR) effect. Using low nitrogen doses, a reduction in coercivity was achieved due to grain refinement, without a concurrent decrease in the saturation magnetization of the Fe films caused by the formation of crystalline iron nitride phases. It was demonstrated that this N-induced grain refinement can be applied beneficially to control the switching field of the "free" layer in magnetic trilayer structures. In general the ability to control magnetic softness without reducing saturation magnetization will prove important for incorporating high spin-polarized materials into spin valves and TMR devices.

Item Type: Article
Themes: Subjects / Themes > Q Science > QC Physics
Subjects outside of the University Themes
Schools: Colleges and Schools > College of Science & Technology
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Materials & Physics Research Centre
Journal or Publication Title: Journal of Applied Physics
Publisher: American Institute of Physics
Refereed: Yes
ISSN: 00218979
Related URLs:
Depositing User: H Kenna
Date Deposited: 03 Sep 2007 12:31
Last Modified: 20 Aug 2013 15:47
URI: http://usir.eprints.org/id/eprint/368

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