Magnetic domain bias field assembly

Details Magnetic domain bias field assembly Magnetic domain bias field assembly

G - Physics

11

C

352/37.2

G11C 11/14 (2006.01) G11C 19/08 (2006.01) H01F 7/02 (2006.01) H01F 10/06 (2006.01)

Patent

CA 1063724

MAGNETIC DOMAIN BIAS FIELD ASSEMBLY Abstract of the Disclosure An improved bias field assembly for reducing power losses in a magnetic domain memory device. A preferred embodiment employs rectangular permanent magnets positioned above and below a drive coil/substrates assembly. Ferrite shields of the same general size as the permanent magnets are interposed between the magnets and the drive coil/sub- strates assembly. These shields provide a highly resistive, relatively impermeable path for induced eddy currents and flux to reduce the effective resistance of the drive coil during high frequency operation and to minimize hysteresis losses.

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