Oliff & Berridge, PLC
Magnetic head for perpendicular magnetic recording having a write shield
A write shield includes first and second shield portions located on opposite sides of a main pole in a track width direction. A return path section includes first and second yoke portions located on opposite sides of the main pole in the track width direction. A coil surrounds at least part of the entire outer periphery of the main pole when viewed from a medium facing surface. The coil includes a first magnetic portion located in a first space between the main pole and the first yoke portion, and a second magnetic portion located in a second space between the main pole and the second yoke portion. The first and second magnetic portions are made of a magnetic conductive material.
TDK Corporation
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Masaya Masahiro Atsushi Norikazu
Kato Saito Matsuo Ota