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Structure and magnetic properties of L10-FePt thin films on TiN/RuAl underlayers

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journal contribution
posted on 01.04.2011, 00:00 by En Yang, Sutatch Ratanaphan, Jian-Gang Zhu, David E. Laughlin

Highly ordered L10 FePt-oxide thin films with small grains were prepared by using a RuAl layer as a grain size defining seed layer along with a TiN barrier layer. Different HAMR (Heat Assisted Magnetic Recording) favorable underlayers were studied to encourage perpendicular texture and preferred microstructure. It was found that the epitaxial and small grain growth from the RuAl/TiN underlayer results in small and uniform grains in the FePt layer with perpendicular texture. By introducing the grain size defining underlayers, the FePt grain size can be reduced from 30 to 6 nm with the same volume fraction (9%) of SiO2 in the film, excellent perpendicular texture, and very high order parameter at 520 °C.

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Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article may be found at http://dx.doi.org/10.1063/1.3565418.

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01/04/2011

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