Patent ID: 7259939
Filing Date: 2007-08-21
Classification: B82Y,G11B

Abstract:
1. A thin-film magnetic head comprising: a first magnetic core extending in a height direction from a surface facing a recording medium; a second magnetic core disposed above the first magnetic core, the second magnetic core facing the first magnetic core with a gap layer therebetween at the surface facing the recording medium, the second magnetic core being connected to the first magnetic core with a connecting layer at a back side in the height direction; a toroidal coil layer comprising a plurality of first coil strips provided in a space surrounded by the first magnetic core and the second magnetic core and a plurality of second coil strips provided above the second magnetic core, the plurality of first coil strips and the plurality of second coil strips being electrically connected to each other and being wound around the second magnetic core; a read head section comprising a shielding layer and a magnetoresistive element; and a metal layer extending at a back of the shielding layer in the height direction, wherein the connecting layer extends in the height direction so as to face the metal layer in a thickness direction, a length of the connecting layer is larger than a length of the toroidal coil layer, a width in a track width direction of the connecting layer is larger than a width in the track width direction of the toroidal coil layer, the first magnetic core includes a back region that extends in the height direction so as to face the metal layer in the thickness direction, the connecting layer is disposed on the back region, and the metal layer, the back region of the first magnetic core, and the connecting layer face each other in the thickness direction.