Magnetic head, head gimbal assembly including the same, and disk device

A head gimbal assembly comprising:

• a supporting plate that has a tip portion;
• a wiring member that includes a thin metal plate, an insulating layer laminated on the thin metal plate, and a conductive layer that is laminated on the insulating layer and has a plurality of wirings, including a first wiring and a second wiring, formed therein, the wiring member being attached to the supporting plate and including a gimbal portion facing the tip portion of the supporting plate;
• and
• a magnetic head mounted on the gimbal portion and electrically connected to the first and second wirings of the wiring member, the magnetic head including
• a main magnetic pole that applies a recording magnetic field to a recording layer of a recording medium,
• a recording coil configured to generate a magnetic field in the main magnetic pole and electrically connected to the first wiring,
• a microwave oscillator that is disposed in a vicinity of the main magnetic pole and electrically connected to the second wiring, and
• a low pass filter that is electrically connected to the second wiring.

A disk device comprising:

• a disk-like recording medium;
• a driving unit configured to rotate the recording medium;
• and
• a head gimbal assembly including
• a supporting plate that has a tip portion;
• a wiring member that includes a thin metal plate, an insulating layer laminated on the thin metal plate, and a conductive layer that is laminated on the insulating layer and has a plurality of wirings, including a first wiring and a second wiring, formed therein, the wiring member being attached to the supporting plate and including a gimbal portion facing the tip portion of the supporting plate;
• a magnetic head mounted on the gimbal portion and electrically connected to the first and second wirings of the wiring member;
• and
• a low pass filter mounted on the gimbal portion and electrically connected to the magnetic head and the second wiring,
• wherein the magnetic head includes a main magnetic pole that applies a recording magnetic field to a recording layer of a recording medium, a recording coil configured to generate a magnetic field in the main magnetic pole and electrically connected to the first wiring, and a microwave oscillator that is disposed in a vicinity of the main magnetic pole and electrically connected to the second wiring.