Magnetic detecting element having pinned magnetic layers...

Details Magnetic detecting element having pinned magnetic layers... Magnetic detecting element having pinned magnetic layers...

2007-06-12

2007-06-12

Bernatz, Kevin M. (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Magnetic head

C428S811200, C428S812000, C360S324110, C360S324120

Reexamination Certificate

active

10755640

ABSTRACT:
The present invention provides a magnetic detecting element capable of increasing a difference between the ease of a conduction electron flow in a low-resistance state and the ease of a conduction electron flow in a high-resistance state to increase a resistance change ΔR. In the magnetic detecting element, a free magnetic layer or a pinned magnetic layer has a synthetic ferromagnetic structure including a first free magnetic sub-layer or a first pinned magnetic sub-layer containing a magnetic material having a positive β value, and a second magnetic sub-layer or a second pinned magnetic sub-layer containing a magnetic material having a negative β value. The β value is characteristics of a magnetic material satisfying the relationship ρ↓/ρ↑=(1+β)/(1−β)(−1≦β≦1)(wherein ρ↓ represents resistivity for minority conduction electrons, and ρ↑ represents resistivity for majority conduction electrons).

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patent: 2001-68759 (2001-03-01), None

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