Proposal on cross-tie wall and Bloch line propagation in thin magnetic films

A serial access memory is proposed based on the propagation of cross-tie walls and Bloch lines along domain walls in thin magnetic films. The techniques used to propagate bubbles may be applied to cross-tie walls and Bloch lines. This method shows promise because of the speed and density, the polycr...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1972-09, Vol.8 (3), p.405-407
Main Author: Schwee, L.
Format: Article
Language:English
Subjects:
Costs
Logic
Magnetic domain walls
Magnetic films
Magnetic materials
Magnetic separation
Proposals
Silver
Springs
Temperature distribution
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Summary:A serial access memory is proposed based on the propagation of cross-tie walls and Bloch lines along domain walls in thin magnetic films. The techniques used to propagate bubbles may be applied to cross-tie walls and Bloch lines. This method shows promise because of the speed and density, the polycrystalline material, the large temperature range, and easy detection with a loop. The expected speed makes possible cheap detection, and as a result the need for magnetic logic is decreased. With propagation velocities within the range of domain tip velocities, a 100 MHz stepping rate can be expected. At this rate a 0.5 millivolt signal can be obtained from a loop as a Bloch line passes beneath it.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.1972.1067535