Thin film magnetic head with Ni-Fe alloy thin film

Details Thin film magnetic head with Ni-Fe alloy thin film Thin film magnetic head with Ni-Fe alloy thin film

1996-01-30

2000-09-12

Renner, Craig A.

Dynamic magnetic information storage or retrieval

Head

Core

G11B 531

Patent

active

061186287

ABSTRACT:
A magnetic film having a high saturation magnetic flux density larger than 1.5 T and a resistivity larger than 40 .mu..OMEGA..cndot.cm is fabricated through an electroplating method using (40-60)Ni-Fe and by adding Co, Mo, Cr, B, In, Pd or the like to the (40-60)Ni-Fe. Thereby, it is possible to obtain a recording head capable of performing sufficient recording in a high frequency range and to obtain a disk storage system with a high recording density which has a transfer rate higher than 15 MB/s, a recording frequency higher than 45 MHz and a rotating speed of a magnetic disk higher than 4000 rpm.

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patent: 5126907 (1992-06-01), Hamakawa et al.
patent: 5276574 (1994-01-01), Abe et al.
patent: 5606478 (1997-02-01), Chen et al.

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