Title :
Optimum compositions for the low-temperature fabrication of highly ordered FePt [001] and FePt [110] films
Author :
Seki, Takeshi ; Shima, Toshiyuki ; Takanashi, Koki ; Takahashi, Yukio ; Matsubara, Eiichiro ; Hono, Kazuhiro
Author_Institution :
Inst. for Mater. Res., Tohoku Univ., Sendai, Japan
fDate :
7/1/2004 12:00:00 AM
Abstract :
The composition dependence of the degree of chemical order S and uniaxial magnetic anisotropy energy Ku has been investigated for FePt [001] and FePt [110] films deposited at the substrate temperature Ts=300°C, and the optimum compositional region for L10 ordering in FePt [110] films has been compared with that in FePt [001] films. It has been found that high S and large Ku are obtained around the stoichiometric composition for FePt [110] films, whereas they are obtained around an off-stoichiometric Pt-rich composition for FePt [001] films, indicating that the difference in optimum compositions for achieving highly ordered structure between FePt [001] and FePt [110] films at reduced temperature.
Keywords :
ferromagnetic materials; iron alloys; magnetic anisotropy; platinum alloys; sputter deposition; stoichiometry; 300 C; FePt; FePt [001] films; FePt [110] films; FePt thin film; Pt-rich composition; chemical order; composition dependence; highly ordered films; highly ordered structure; low-temperature fabrication; optimum compositions; sputter-deposition; stoichiometric composition; uniaxial magnetic anisotropy energy; Fabrication; Iron; Magnetic anisotropy; Magnetic films; Magnetic materials; Magnetic particles; Magnetic recording; Sputtering; Substrates; Temperature; Composition dependence; FePt thin film; low-temperature fabrication; sputter-deposition;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.832108
