Patterned multi-material basecoat to reduce thermal protrusion
US7123447B2 · kind B2 · utility
6Cited by
14References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2003 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Jul 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3136
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To reduce thermal pole-tip protrusion and recession, a magnetic head includes a multi-material basecoat. The magnetic head has an air bearing surface and a back surface opposite the air bearing surface. The magnetic head includes a substrate and the basecoat positioned upon the substrate. The basecoat has a first portion and a second portion wherein a Young's modulus of the first portion is less than a Young's modulus of the second portion. A data transducer is positioned upon the basecoat adjacent the air bearing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.