Invention Grant
- Patent Title: Spin-torque oscillator, magnetic head including the spin-torque oscillator, and magnetic recording and reproducing apparatus
- Patent Title (中): 旋转扭矩振荡器，包括自旋扭矩振荡器的磁头和磁记录和再现装置
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Application No.: US12240042Application Date: 2008-09-29
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Publication No.: US08194361B2Publication Date: 2012-06-05
- Inventor: Kiwamu Kudo , Tazumi Nagasawa , Koichi Mizushima , Rie Sato
- Applicant: Kiwamu Kudo , Tazumi Nagasawa , Koichi Mizushima , Rie Sato
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-031789 20080213
- Main IPC: G11B5/39
- IPC: G11B5/39 ; G11B5/127
Abstract:
It is made possible to provide a spin-torque oscillator that has a high Q value and a high output. A spin-torque oscillator includes: an oscillating field generating unit configured to generate an oscillating field; and a magnetoresistive element including a magnetoresistive effect film including a first magnetization pinned layer of which a magnetization direction is pinned, a first magnetization free layer of which a magnetization direction oscillates with the oscillating field, and a first spacer layer interposed between the first magnetization pinned layer and the first magnetization free layer.
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