Thin film magnetic head and magnetic disk device

Details Thin film magnetic head and magnetic disk device Thin film magnetic head and magnetic disk device

2011-08-30

2011-08-30

Pham, Ly D (Department: 2827)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S245300, C360S234300

Reexamination Certificate

active

08009392

ABSTRACT:
Foundation layers of a thin film magnetic head are disposed between insulating layers and bias magnetic field application layers, and are configured of Cr or Cr alloy. The insulating layers are configured of a Si oxide such that the Si content of the Si oxide is in the range of 30˜56 at % (atom %) and that the atom ratio of oxygen to Si (O/Si) is in the range of 0.8˜1.3. With the configuration, the occurrence rate of noise is reduced.

REFERENCES:
patent: A-2008-84446 (2008-04-01), None
patent: A-2008-97700 (2008-04-01), None

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