Effect of magnetic field annealing on microstructure and magnetic properties of FePt films

• Published in: Journal of magnetism and magnetic materials Vol. 322; no. 23; pp. 3789 - 3791
• Main Authors: Li, Y.B., Lou, Y.F., Zhang, L.R., Ma, B., Bai, J.M., Wei, F.L
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-12-2010; Elsevier
• Subjects: Annealing; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Curie temperature; Domain effects, magnetization curves, and hysteresis; Exact sciences and technology; FePt film; Ferrous alloys; Intermetallics; Iron compounds; Magnetic field annealing; Magnetic fields; Magnetic properties and materials; Magnetic properties of monolayers and thin films; Magnetic properties of surface, thin films and multilayers; Magnetic recording media; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; orientation; Perpendicular anisotropy; Physics; Platinum compounds; Texture; Magnetic recording media; orientation; FePt film; Perpendicular anisotropy; Magnetic field annealing; Curie point; Magnetic annealing; Platinum alloys; Magnetic field effects; Magnetic hysteresis; Iron alloys; Texture; Magnetic thin films; Recording material; Microstructure; Perpendicular magnetic anisotropy; Magnetic properties
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2010.07.047

FePt (20
nm) films were annealed in a magnetic field (along the normal direction of the films) at a temperature around the Curie temperature of
L1
0 FePt. The influence of magnetic filed annealing on texture and magnetic properties of FePt films were investigated. The results indicate that preferential (0
0
1) orientation and perpendicular anisotropy can be obtained in
L1
0 FePt films by using magnetic field annealing around the Curie temperature of
L1
0 FePt. This is one of the potential methods to obtain (0
0
1) orientation and thus to improve the perpendicular anisotropy in FePt films.