Method for manufacturing an inductive write element employing bi-layer photoresist to define a thin high moment pole pedestal
US6430806B1 · kind B1 · utility
155Cited by
28References
9Claims
0Family size
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Key dates
| Filing date | Jun 23, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An inductive write element for use with a magnetic data recording and retrieval system is provided. The write element includes a magnetic yoke having an electrically conductive coil passing there through. The yoke is constructed of first and second magnetic poles, and performance of the write element is improved by the inclusion of a very thin pedestal of a high magnetic moment material on the first pole in the pole tip region. Further performance gains are realized by providing a tapered edge on the pedestal to facilitate magnetic flux flow through the pedestal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.