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Domain observation during direct overwrite on magneto-optical recording films

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.102414· OSTI ID:5890178
Domain patterns were observed with a polarized microscope during direct thermomagnetic overwrite at a fixed bias magnetic field. The size of a recorded domain can be changed reversibly by irradiation of laser pulses with various durations. By scanning a rapidly pulsed laser beam on a film, a stripe domain can be written, erased, and manipulated. This technique may be used in a new type of rewritable memory device. These overwrite behaviors can be explained with a model which assumes that an initial domain formed during laser pulse heating shrinks during cooling.
Research Organization:
Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185, Japan (JP)
OSTI ID:
5890178
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 55:3; ISSN APPLA
Country of Publication:
United States
Language:
English