The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2013
Filed:
Dec. 06, 2011
Yuta Udo, Odawara, JP;
Mikito Sugiyama, Odawara, JP;
Masato Shiimoto, Odawara, JP;
Nobuo Yoshida, Hiratsuka, JP;
Kenji Sugiura, Odawara, JP;
Masashi Hattori, Odawara, JP;
Yuta Udo, Odawara, JP;
Mikito Sugiyama, Odawara, JP;
Masato Shiimoto, Odawara, JP;
Nobuo Yoshida, Hiratsuka, JP;
Kenji Sugiura, Odawara, JP;
Masashi Hattori, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Minute elements are formed while a photo deviation is suppressed between a spin torque oscillator and a main pole and damage is prevented on the ends of the spin torque oscillator in microwave-assisted recording. A magnetic recording head used for microwave-assisted recording includes: a main pole; a spin torque oscillator that is disposed on the main pole and includes a magnetization high-speed rotation layer for rotating magnetization at a high speed by a spin torque; a protective film that is disposed in the track width direction of the spin torque oscillator; an insulating film formed over the wall surfaces of the main pole and the wall surfaces of the protective film; and a magnetic film formed on the insulating film so as to cover at least the main pole.