White head for high anisotropy media
US6785092B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2002 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Mar 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F10/3286
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A write head for writing information bits to magnetic storage media includes a first write pole for producing a first magnetic field in a first direction and a second write pole for producing a second magnetic field such that the combined field from the two poles lies either substantially along the first direction or in a second direction that is substantially orthogonal to the first direction. The second write pole includes a free layer having magnetization controlled by spin transfer torque, and a first spacer positioned between the free layer and the first write pole. The write head can further include a pinned layer and a second spacer positioned between the pinned layer and the free layer. A disc drive that includes the write head and a method of writing to magnetic storage media that utilizes the write head are also included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.