Abstract
In the heat-assisted magnetic recording, the thermal pro. le of the media affects the recording performance seriously. Unfortunately, there is no direct method to measure it dynamically. In this paper, an indirect method is proposed to characterize the cross-track thermal pro. le with the spin-stand. The experimental results indicate that the local temperature increase has nonlinear relationship with the laser power. As the laser power increases, the thermal pro. le width increases. The media has a higher temperature increase and a bigger thermal pro. le at a slower rotation speed. The reasons for these phenomena are explained as well. (C) 2007 Elsevier B.V. All rights reserved.