CPP MAGNETIC SENSING ELEMENT IN WHICH PINNED MAGNETIC LAYERS...

Details CPP MAGNETIC SENSING ELEMENT IN WHICH PINNED MAGNETIC LAYERS... CPP MAGNETIC SENSING ELEMENT IN WHICH PINNED MAGNETIC LAYERS...

2005-03-01

2005-03-01

Bernatz, Kevin M. (Department: 1773)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C428S611000, C428S637000, C428S668000, C428S686000, C428S213000, C428S692100

Reexamination Certificate

active

06862159

ABSTRACT:
A magnetic sensing element includes a lower multilayer film including a lower pinned magnetic layer, a lower nonmagnetic layer, a free magnetic layer, an upper nonmagnetic layer, and an upper pinned magnetic layer; and an upper multilayer film including a lower pinned magnetic layer, a lower nonmagnetic layer, a free magnetic layer, an upper nonmagnetic layer, and an upper pinned magnetic layer. Each pinned magnetic layer includes a first pinned magnetic sublayer, a second pinned magnetic sublayer, and an intermediate nonmagnetic sublayer. By setting the magnetization direction of the second pinned magnetic sublayers in the lower multilayer film antiparallel to the second pinned magnetic sublayers in the upper multilayer film, the magnetic sensing element can output a pulsed signal directly when moving over a magnetization transition region.

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patent: 20040136231 (2004-07-01), Huai et al.

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