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Ferrite Disk Substrate for Vertical Recording

IP.com Disclosure Number: IPCOM000065906D
Original Publication Date: 1985-Nov-01
Included in the Prior Art Database: 2005-Feb-19

Publishing Venue

IBM

Related People

Authors:
Scheidecker, RW [+details]

Abstract

With recent advances in ceramic processing technology, it is possible to produce large cross sections of fully dense ferrite. This solves some of the unique requirements necessary for a vertical recording disk substrate such as a high surface finish and soft magnetic properties. With current techniques, this replaces two or more processing steps and eliminates the eddy current and track wandering problem found on disks with permalloy underlayers.