Thin film magnetic head device

Details Thin film magnetic head device Thin film magnetic head device

2005-05-03

2005-05-03

Miller, Brian E. (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S324100, C360S324200

Reexamination Certificate

active

06888702

ABSTRACT:
In a thin film magnetic head device including a reading giant magneto-resistive thin film magnetic head element whose electric equivalent circuit is expressed by a series circuit of an equivalent voltage source and a series resistor RHand a parallel capacitor C connected in parallel with said series circuit, inductor L is connected in series with said series resistor RHand a parallel resistor R is connected in series with said parallel capacitor C. The coil L and parallel capacitor C are set such that an angular frequency ω0=1/(LC)1/2, an angular frequency ω1=1/CR and an angular frequency ωH=1/CRHsatisfy conditions of ω0>ω1and ω0>ωH, preferably ω0>>ω1and ω0>>ωHto extend a frequency characteristic toward a high frequency range.

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