Manufacturing method for high-density magnetic data storage media
US6719841B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Jul 6, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/855
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of fabricating a high-density magnetic data-storage medium, the method comprising the steps of: (a) forming a plurality of nanodots of non-magnetic material in a regular array on a surface of a substrate, said array being notionally dividable into a plurality of clusters that each comprise a plurality of nanodots, wherein each nanodot of a said cluster overlaps with neighbouring nanodots of that cluster to form a well between them; (b) depositing magnetic material onto said substrate to at least partly fill the wells of each cluster; and (c) removing material to reveal a regular array of wells filled with magnetic material, each of said wells being separated from neighbouring wells by non-magnetic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.