Title :
Surface topology and magnetic properties of FePt alloyed thin films
Author :
Na, Kyung-Hwan ; Na, Jong-Gab ; Kim, Hi-Jung ; Jang, Pyung-Woo ; Lee, Sung-Rae
Author_Institution :
Korea Inst. of Sci. & Technol., Seoul, South Korea
fDate :
7/1/2001 12:00:00 AM
Abstract :
Dependency of Ar pressure on the surface topology and magnetic properties of as-deposited and air-annealed 120 nm thick FePt thin films were investigated. The higher the Ar pressure was, the rougher the surface of as-deposited films became. After annealing in the air, the surface became much rougher which was due to formation of Fe oxide on the surface. The oxidation was much accelerated in the films with rougher surface. This accelerated oxidation resulted in a high order-disorder transformation rate and higher coercivity
Keywords :
annealing; coercive force; iron alloys; magnetic thin films; order-disorder transformations; oxidation; platinum alloys; sputtered coatings; FePt; FePt alloy thin film; air annealing; coercivity; magnetic properties; order-disorder transformation; oxidation; sputter deposition; surface topology; Acceleration; Annealing; Argon; Iron; Magnetic films; Magnetic properties; Oxidation; Rough surfaces; Surface roughness; Topology;
Journal_Title :
Magnetics, IEEE Transactions on
