Magnetoresistive sensor and a thin film magnetic head
AssigneeTDK Corporation
InventorKoichi Terunuma
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Abstract
A magnetic domain controlling film is provided on a soft magnetic film, and magnetizes the soft magnetic film in one direction. The magnetic domain controlling film has a large first thickness t1 enough to magnetize the soft magnetic film at both ends in the magnetization direction of the soft magnetic film, and has a small second thickness t2 enough for the magnetization of the soft magnetic film to be rotated at the central part in the magnetization direction of the soft magnetic film. The magnetic domain controlling film covers the soft magnetic film almost entirely.
Claims9
A magnetoresistive sensor comprising a soft magnetic film, a magnetic domain controlling film to magnetize the soft magnetic film in one direction separated by a given distance on the soft magnetic film, and a thinner protection film covering the part of the soft magnetic film between the separated magnetic domain controlling film than the magnetic domain controlling film.
Dependencies are inferred from the claim text.