Method and system for providing a read transducer having a dual free layer
US9147404B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2015 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Mar 31, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/398
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method provides a magnetic transducer having an air-bearing surface (ABS). The method includes providing a read sensor stack for a read sensor of the read device and defining a read sensor from the read sensor stack in a stripe height direction. The stripe height direction is perpendicular to the ABS. At least one magnetic bias structure is also provided. An insulating layer is deposited on the read sensor. The insulating layer has a full film removal rate of not more than fifty Angstroms per minute. The insulating layer also has a top surface. The insulating layer is planarized. At least a portion of the top surface of the insulating layer being exposed at the start of the planarizing step. At least the read sensor is defined in a track width direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.