Method of patterning magnetic members

Details Method of patterning magnetic members Method of patterning magnetic members

1993-11-08

1995-03-21

Fourson, George

Coating processes

Magnetic base or coating

Magnetic coating

427129, 156289, 340551, 340572, H01F 1008, B32B 706, G08B 1324

Patent

active

053993721

ABSTRACT:
A method of patterning magnetic material so as to achieve desired magnetic properties includes providing a metallic substrate having an array of raised islands spaced apart by depressed regions in a pattern to define geometries of magnetic devices. In one embodiment, heating the metallic substrate yields magnetic films that possess improved properties with respect to coercive force, anisotrophy field, permeability, and saturation magnetization of both magnetically hard and magnetically soft materials. In another embodiment, a release layer having a low adhesion with respect to attachment to the metallic substrate or a non-metallic substrate is deposited prior to formation of multilayer stacks, thereby reducing the risk of splitting such a stack. In yet another embodiment, the magnetic devices are formed in the depressed regions, rather than on the raised islands.

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patent: 5219655 (1993-06-01), Calhoun et al.

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