Magnetic recording head and disk device comprising the same
AssigneeKabushiki Kaisha Toshiba
InventorsTomoko Taguchi, Tomomi Funayama
Life of this patent
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Abstract
According to one embodiment, a magnetic recording head includes an air bearing surface, a magnetic core including a main magnetic pole and a write shield arranged to face the main magnetic pole with a write gap, a coil, and a high-frequency oscillator provided between the main magnetic pole and the write shield in the write gap. The magnetic core includes an opposite surface facing a film surface of the high-frequency oscillator, a magnetic layer, and a nonmagnetic layer in which magnetic microparticles are dispersed. The nonmagnetic layer is provided outside the magnetic layer in at least a part of the opposite surface of the magnetic core.
Claims13
A magnetic recording head comprising:
- an air bearing surface;
- a magnetic core comprising a main magnetic pole formed of a high-magnetic-permeability material and comprising an apical end portion extending to the air bearing surface;
- and a write shield formed of a high-magnetic-permeability material, the write shield being arranged to face the main magnetic pole through a nonconductive layer on a deep side apart from the air bearing surface, and to face the apical end portion of the main magnetic core on the air bearing side through a conductive nonmagnetic layer with a write gap;
- a coil provided so as to pass across the magnetic core;
- a high-frequency oscillator provided between the main magnetic pole and the write shield in the write gap;
- and
- a pair of current terminals for supplying direct current between the main magnetic pole and the write shield, wherein
- the magnetic core comprises an opposite surface facing a film surface of the high-frequency oscillator, a magnetic layer formed of a high-magnetic-permeability material, and a nonmagnetic layer in which magnetic microparticles are dispersed, the nonmagnetic layer being provided outside the magnetic layer in at least a part of the opposite surface of the magnetic core.
Dependencies are inferred from the claim text.