Spin oscillator or magnetic recorder including multiple injection layers in the magnetic recording head
US8472140B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2012 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Feb 24, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F10/3286
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recorder includes: a magnetic recording medium; a reproducing head; a magnetic recording head including: a main magnetic pole; a first magnetic layer containing a TM alloy; a second magnetic layer containing a TM alloy or an RE-TM alloy; a third magnetic layer containing an RE-TM alloy; a first intermediate layer provided between the first magnetic layer and the second magnetic layer; and a second intermediate layer provided between the second magnetic layer and the third magnetic layer; and a signal processing portion which performs signal writing into the magnetic recording medium by using the magnetic recording head and reading from the magnetic recording medium by using the reproducing head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.