Title:
MAGNETIC HEAD AND MAGNETIC RECORDING AND REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JP2013058295
Kind Code:
A
Abstract:
To drive an assisted magnetic field at low voltage while maintaining a high-frequency magnetic field.
A magnetic head has a main magnetic pole, a write-shield constituting the main magnetic pole and a magnetic circuit, and a spin torque oscillation element provided between the main magnetic pole and the write-shield. The spin torque oscillation element is provided with a first oscillation layer, a nonmagnetic spin sink layer, a second oscillation layer, a nonmagnetic intermediate layer, and a spin injection layer provided in sequence from the write-shield side to the main magnetic pole side. The nonmagnetic spin sink layer is formed of at least one element selected from the group consisting of Ru, Rh, Ta, W, Cr, Ir, Mo, Re, Nb, Pt, and Pd.
Inventors:
KOI KATSUHIKO
MURAKAMI SHUICHI
KITAZAKI MARIKO
TOMOTA YUSUKE
FUJITA NORIHITO
MURAKAMI SHUICHI
KITAZAKI MARIKO
TOMOTA YUSUKE
FUJITA NORIHITO
Application Number:
JP2011197610A
Publication Date:
March 28, 2013
Filing Date:
September 09, 2011
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G11B5/31
Domestic Patent References:
| JP2008305486A | 2008-12-18 | |||
| JP2008277586A | 2008-11-13 | |||
| JP2005229108A | 2005-08-25 | |||
| JP2006286855A | 2006-10-19 |
Attorney, Agent or Firm:
Kurata Masatoshi
Takakura Shigeo
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takakura Shigeo
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori