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http://dx.doi.org/10.5757/JKVS.2007.16.5.343

Preparation of tetragonal phase L10 FePt thin films with H2 annealing atmosphere  

Kong, Sok-Hyun (Samsung Advanced Institute of Technology)
Kim, Kyung-Hwan (Department of Electrical Engineering)
Publication Information
Journal of the Korean Vacuum Society / v.16, no.5, 2007 , pp. 343-347 More about this Journal
Abstract
Fe thin films exhibited (100) preferential orientation when they were deposited at low deposition rate of $0.1{\AA}/s$ on glass substrates by using facing target sputtering system. The (100) oriented Fe layer induces (100) orientation of Pt layer deposited on it owing to hetero-epitaxial growth. After annealing at $600^{\circ}C$ in $H_2$ atmosphere, FePt films exhibited f.c.t. (001) texture in the whole film caused by inter-diffusion between atoms. We have also confirmed that the homogeneously inter-diffused compositional modulation in the film after the annealing process. Furthermore, annealing process in $Ar+H_2$ atmosphere at $400^{\circ}C$ during Pt deposition was effective for attaining Pt (100) texture. The annealing process during Pt deposition also induced in low annealing temperature and decreased annealing time for attaining the FePt f.c.t. (001) structure.
Keywords
FePt; annealing process; Pt; f.c.t (001);
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