Abstract: According to one embodiment, a magnetic head includes a magnetic pole, a first shield, a magnetic layer, and first and second conductive layers. The magnetic layer is provided between the magnetic pole and the first shield. The first conductive layer contacts the first shield and the magnetic layer, is provided between the first shield and the magnetic layer, and includes at least one element selected from Cu, Ag, and Au. The second conductive layer is provided between the magnetic pole and the magnetic layer. The second conductive layer includes first and second regions. The first region contacts the magnetic layer and includes at least one first element selected from Cu, Ag, Au, Al, Ti, Ru, Mg, and V. The second region is provided between the first region and the magnetic pole and includes at least one second element selected from Ta, Pt, W, Mo, Ir, Cr, Tb, Rh, and Pd.

Abstract: A perpendicular magnetic recording write head includes a heater on one side of the pole tip of the main pole and a heat sink on the opposite side of the pole tip. The heater is formed of high resistivity material and is connected to a power source. During writing, power is applied to the heater, which causes a relatively large temperature gradient across the pole tip from the heater to the heat sink. The temperature gradient increases the damping of the ferromagnetic material of the main pole during writing, which increases the switching speed of the main pole.

Abstract: The present invention relates to a magnetic sensor which can detect a weak magenetic field and improve the detection precision with an easy and convenient configuration. A magnetic sensor is provided with a magnetic body changing the direction of a magnetic field input to a magnetoresistance effect element in the vicinity of the magnetoresistance effect element in which the resistance value changes according to the direction of the input magnetic field, the magnetic body has at leas one projection portion in the direction almost parallel to direction in which the magnetic induction occurs in the magnetoresistance effect element. The direction in which the projection portion of the magnetic body projects is substantially parallel to the direction in which the magnetization of the magnetoresistance effect element is fixed.

Abstract: A magnetic sensor device comprises a thin film first magnetic body provided with a magnetic path convergence/divergence section arranged on a predetermined axis, and at least a pair of wing-shaped sections extending from the magnetic path convergence/divergence section toward the opposite sides of the axis, a thin film second magnetic body provided with a magnetic path convergence/divergence section arranged on the predetermined axis to be spaced from the magnetic path convergence/divergence section of the first magnetic body, at least a pair of wing-shaped sections extending from this magnetic path convergence divergence toward the opposite sides of the axis, a first coil wound around the first magnetic body, a second coil wound around the second magnetic body, and a magnetoresistance effect element arranged between the magnetic path convergence/divergence section of the first magnetic body and the of the second magnetic body, wherein the first coil applies a magnetic field to a magnetic path of the first ma

Abstract: A method and system provide a magnetic transducer that includes an underlayer. The method and system include providing a recessed region in the underlayer. The recessed region includes a front having an angle from horizontal. The angle is greater than zero and less than ninety degrees. The method and system further includes providing an assist pole layer in the recessed region and providing a main pole layer. A portion of the main pole layer resides on the assist pole layer. A main pole is defined from the assist pole layer and the main pole layer.