Method and device for high-speed magnetic recording

Details Method and device for high-speed magnetic recording Method and device for high-speed magnetic recording

2007-07-17

2007-07-17

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

C369S013330

Reexamination Certificate

active

10647823

ABSTRACT:
The invention provides a method for recording information in the form of a pattern of magnetic domains in a recording layer. The recording layer includes a material having a Curie temperature and grains, the grains having boundaries over which the exchange coupling is small. The method includes a first step of applying heat to the material, thereby heating an area of the recording layer to a temperature above the Curie temperature during a first interval. In a second step a magnetic field is applied to the area during a second interval, the second interval ending after the first interval.

REFERENCES:
patent: 6665235 (2003-12-01), Murakami et al.
patent: 6830824 (2004-12-01), Kikitsu et al.
Jaap Ruigrok, “Prospects for Thermally-Assisted Recording”, TMRC-NIST-CMU-Seagate Ext. Sep. 3, 2002, pp. 1-49.

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