High density devices using permalloy propagation of wall-coded bubbles
A close-packed, field access major/minor loop device configuration has evolved from studies of the wall-coded hexagonal bubble lattice. Fully functional chips have been designed, fabricated and tested. Information is coded in the wall structure of 2.7 μm bubbles in a fully populated array of permall...
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Published in | IEEE transactions on magnetics Vol. 15; no. 6; pp. 1501 - 1506 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
IEEE
01.11.1979
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Subjects | |
Online Access | Get full text |
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Summary: | A close-packed, field access major/minor loop device configuration has evolved from studies of the wall-coded hexagonal bubble lattice. Fully functional chips have been designed, fabricated and tested. Information is coded in the wall structure of 2.7 μm bubbles in a fully populated array of permalloy driven minor loops. A storage cell of 5.6×5.6 μm 2 is achieved with a 1.4 μm minimum feature. Tests of the close packed storage region show excellent propagation margin and wall state stability over the tested temperature range from 5°C to 70°C at operating frequencies to 400 kHz. Preliminary data in/data out operation has been performed at 100 kHz. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0018-9464 1941-0069 |
DOI: | 10.1109/TMAG.1979.1060420 |