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High Resolution Dynamic Magnetic Domain Readout

IP.com Disclosure Number: IPCOM000042736D
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04

Publishing Venue

IBM

Related People

Authors:
Kay, E Siegmann, HC [+details]

Abstract

Ability to observe magnetic domains on thin films on substrates of any thickness statically or at very high frequency - future progress in the field of magnetic recording may well be enhanced by new methods for viewing small magnetic domains at high speed. For further development of such schemes, it is desirable to be able to observe the dynamic and static behavior of domain patterns with a spatial resolution of less than 0.5 mm and in a time of less than 10-6 sec. Furthermore, it should be possible to accomplish this with magnetic materials which are deposited onto a nontransparent substrate and sometimes with a film thickness of less than 500 A .