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The pinning of the self-pinned sensor is improved by incorporating Co-Pt high Hc material in one embodiment and Ni45Fe55 high positive magnetostriction material in the second embodiment.
English (United States)
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THIS COPY WAS MADE FROM AN INTERNAL HITACHI DOCUMENT AND NOT FROM THE PUBLISHED BOOK
HSJ820030022 Lew Nunnelley/US/HGST
SELF-PINNED SENSOR WITH CoPt LAYER IN AP1
The structures for these two embodiments are:
Embodiment 1: NiFeCr/NiFe/PtMn/CoPt/Ru/CoFe/Cu/CoFe/NiFe/Ta
PtMn under CoPt is very thin (< 30 A) and is part of the seed layer structure.
Embodiment 2: This is for the CPP sensor