Enhancement in ordering of FePt films by magnetic field annealing

Wang, H. Y.; Ma, X. K.; He, Y. J.; Mitani, S.; Motokawa, M.
September 2004
Applied Physics Letters;9/20/2004, Vol. 85 Issue 12, p2304
Academic Journal
Effect of magnetic field annealing on chemical ordering of FePt films has been investigated. It is found that the ordering rate in FePt films is enhanced by applying a magnetic field during postdeposition annealing. Measurements of the structure and magnetic properties of FePt films reveal that the disorder-order transformation starts at or below 450°C when the film is annealed in a magnetic field of 40 kOe. The possible reason for the enhancement in the ordering of FePt films by magnetic field annealing is discussed.


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