Free layer and design for higher areal density

Details Free layer and design for higher areal density Free layer and design for higher areal density

2005-03-22

2005-03-22

Evans, Jefferson (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S125330

Reexamination Certificate

active

06870716

ABSTRACT:
A magnetic head having a first layer having a positive magnetostriction and a second layer coupled to the first layer. The second layer has a negative magnetostriction that counteracts at least a portion of the positive magnetostriction of the first layer so that the net effective magnetic anisotropy of the layers together is reduced or essentially cancelled, thereby increasing a sensitivity of the layer(s) to external magnetic fields.

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