Oliff & Berridge, PLC
Magnetic head for perpendicular magnetic recording having a main pole and a shield
A magnetic head includes a main pole, a write shield, and a gap part. The write shield includes first and second side shields and a top shield. The main pole has first and second side parts. The first side shield has a first sidewall. The second side shield has a second sidewall. The gap part includes a gap film and a nonmagnetic layer. The gap film is disposed to be in contact with the first and second sidewalls. The first side part has first and third side surfaces arranged in this order from the medium facing surface side. The second side part has second and fourth side surfaces arranged in this order from the medium facing surface side. The nonmagnetic layer is present between the third side surface and the first sidewall and between the fourth side surface and the second sidewall.
SAE Magnetics (H.K.) Ltd. Headway Technologies, Inc.
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Hiroyuki Yoshitaka Kazuki Atsushi Kazumasa
Ito Sasaki Sato Iijima Yasuda