Preparation and Magnetic Properties of Sputter-Deposited Fe-Pt Thin Films

Abstract

We have studied preparation of the FePt films with high perpendicular anisotropy on glass substrates aiming at high density recording media. It was found that a high pressure sputter-deposition onto an underlayer of Cr (100) is useful to obtain an fct structure and control the c-axis of the fct crystal structure perpendicularly to the film normal. In the case of the direct deposition onto the glass substrates, we obtained isotropic M-H loops with high squareness in both the perpendicular and longitudinal directions.