Direct Measurement of the Thermal Gradient in Heat Assisted Magnetic Recording

Autor:	C. C. Poon, Hans Jurgen Richter, Matteo Staffaroni, Oleksandr Mosendz, B. C. Stipe, R. Zakai, Gregory Parker
Rok vydání:	2013
Předmět:	Temperature gradient Materials science Quality (physics) Optics Heat-assisted magnetic recording business.industry Thermal Laser power scaling Electrical and Electronic Engineering business Temperature measurement Electronic Optical and Magnetic Materials
Zdroj:	IEEE Transactions on Magnetics. 49:5378-5381
ISSN:	1941-0069 0018-9464
Popis:	In heat assisted magnetic recording, the thermal gradient at the recording point determines the quality of the written transitions. We developed an experimental technique that enables us to find the thermal gradients in both the down- and the cross-track directions, where the laser power is modulated during the recording process. It is explained in detail how quantitative information on the gradients can be obtained from the measured data. It is found that strong heat-sinking of the media increases the thermal gradient and that the gradient measurement reacts sensitively to the shape of the thermal profile.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::05818da45a9691c8d11fbae3f642dcde https://doi.org/10.1109/tmag.2013.2262771 Zobrazit plný text záznamu