R&D: Model for Predicting Transition Curvature in HAMR

Transition curvature in HAMR can limit linear recording density and reduce readback signal amplitude.

This is a Press Release edited by StorageNewsletter.com on January 3, 2019 at 2:08 pm

IEEE Transactions on Magnetics has published an article written by Simon John Greaves, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan, R. Itagaki, and Yasushi Kanai, Department of Engineering, Niigata Institute of Technology, Kashiwazaki 945-1195, Japan.

Abstract: “Transition curvature in heat-assisted magnetic recording can limit the linear recording density and reduce the readback signal amplitude. In this paper, we describe a simple model for the prediction of the transition curvature and use the model to determine the heat source location, relative to the write head, that minimizes transition curvature.“