Microwave assisted magnetic head

A thin film magnetic head provided with a writing magnetic field generation means having a main pole, an auxiliary pole, and a coil wound between the main pole and the auxiliary pole, comprising:

• a microwave radiator provided between the main pole and auxiliary pole and in the vicinity of an opposing medium surface facing a magnetic recording medium that is a recording target;
• and
• a nonmagnetic dielectric layer filling a gap between the main pole and the auxiliary pole to embed the microwave radiator, wherein
• the nonmagnetic dielectric layer has an inclined surface at an end on a side of the opposing medium surface by which a microwave radiated from the microwave radiator is bent toward a side of the main pole, wherein
• when viewed from a cross-section cut in a perpendicular direction with respect to a track width direction and when the opposing medium surface is disposed to face downwardly,
• the tip of the main pole main pole is slightly bent toward the auxiliary pole side, and the bending start point is substantially at the same horizontal level as an underside of the microwave radiator.

A thin film magnetic head provided with a writing magnetic field generation means having a main pole, an auxiliary pole, and a coil wound between the main pole and the auxiliary pole, comprising:

• a microwave radiator provided between the main pole and auxiliary pole and in the vicinity of an opposing medium surface facing a magnetic recording medium that is a recording target;
• and
• a nonmagnetic dielectric layer filling a gap between the main pole and the auxiliary pole to embed the microwave radiator, wherein
• the nonmagnetic dielectric layer has an inclined surface at an end on a side of the opposing medium surface by which a microwave radiated from the microwave radiator is bent toward a side of the main pole, wherein
• a recess part created for forming the inclined surface of the nonmagnetic dielectric layer at the end on the side of the opposing medium surface is filled with a nonmagnetic filler layer, and
• the opposing medium surface is flat.

A thin film magnetic head provided with a writing magnetic field generation means having a main pole, an auxiliary pole, and a coil wound between the main pole and the auxiliary pole, comprising:

• a microwave radiator provided between the main pole and auxiliary pole and in the vicinity of an opposing medium surface facing a magnetic recording medium that is a recording target;
• and
• a nonmagnetic dielectric layer filling a gap between the main pole and the auxiliary pole to embed the microwave radiator, wherein
• the nonmagnetic dielectric layer has an inclined surface at an end on a side of the opposing medium surface by which a microwave radiated from the microwave radiator is bent toward a side of the main pole, wherein
• a tip of the main pole, which is closer to the side of the recording medium, is slightly bent toward the auxiliary pole, and
• either a bending start point is at the same level as an underside of the microwave radiator, or the underside of the microwave radiator is positioned rearwardly relative to the bending start point.