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Reduction of Ferrite Dead Layer

IP.com Disclosure Number: IPCOM000045919D
Original Publication Date: 1983-May-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Ozimek, EJ: AUTHOR [+2]

Abstract

The polishing of ferrite tends to form a magnetic dead area at the surface. This dead area may be significantly reduced by annealing.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Reduction of Ferrite Dead Layer

The polishing of ferrite tends to form a magnetic dead area at the surface. This dead area may be significantly reduced by annealing.

Polished ferrite is useful in building magnetic heads. However, the ferrite, when polished, tends to form a magnetic dead area at the polished surface, detracting from the magnetic properties of the head, e.g., in defining the gap length.

Annealing the polished ferrite blocks prior to use in building heads causes the reduction of the dead layer, making the ferrite magnetically active throughout the entire region defining the gap.

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