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Read response of a GMR sensor investigated with a micromagnetic model

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3 Author(s)
Ono, H. ; Dept. of Electron. Eng., Kogakuin Univ., Tokyo, Japan ; Sakurai, M. ; Yoshida, K.

The read response of a giant magnetoresistive (GMR) sensor was calculated using a micromagnetic model taking into account the full interaction between a GMR sensor and a double-layered medium. The simulated results showed that the magnetic interaction between the sensor and the recording medium scarcely influenced the signal waveforms and the roll-off properties. The comparison of the isolated waveform and the roll-off with those obtained from the modified Fan's equation suggested that there is a nonlinearity in the read process of a GMR sensor.

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Magnetics, IEEE Transactions on  (Volume:41 ,  Issue: 10 )