US 6,342,311 B1 · High magnetic moment seed layer materials for writer pole tips

Abstract

A magnetic recording head has a magnetic pole tip and a seed layer upon which the magnetic pole tip is formed. The seed layer is preferably formed of a high magnetic moment material having a saturation magnetization of at least 1.8 Tesla and a high resistance to corrosion. In preferred embodiments of the present invention, the seed layer is preferably formed of 2.1 Tesla Fe44-46Co39-41Ni14.5-15, 1.8 Tesla Fe54-56Ni27-29Co16-18 Tesla Fe86-90Cr10-14, or 1.9 Tesla Fe52-62Co26-36Cr10-14, wherein the subscripts indicate a preferred range of atomic percentages for each element in the given alloy.

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Facts

Application

09/588,394Filed 6 Jun 2000

Granted

29 Jan 2002

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

G11B 5/653
Characterised by its composition: containing Fe or Ni
G11B 5/3143
Disposition of layers: including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux…
G11B 5/3163
Using thin films: fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating,…
G11B 5/672
The record carriers consisting of several layers: having different compositions in a plurality of magnetic layers, e.g. layer compositions having…

High magnetic moment seed layer materials for writer pole tips

Life of this patent

Abstract

Claims0

High magnetic moment seed layer materials for writer pole tips

Life of this patent

Abstract

Claims0