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Fundamental study on a thin-film AE sensor for measurement of behavior of a multi-pad contact slider

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4 Author(s)
Imai, S. ; Data Storage & Retrieval Syst. Div., Hitachi Ltd., Odawara, Japan ; Burger, G.-J. ; Lammerink, T.S.J. ; Fluitman, J.H.J.

To study the fundamental dynamic characteristics of a multi-pad slider for contact recording, we developed a thin-film piezoelectric acoustic emission array sensor on an Si-suspension with an array pattern similar to that of contact pads. Experiments showed that the sensitivity of the sensor is about 0.11 V/N (slider thickness: 0.2 mm) and that each array sensor designed here is not influenced by the acoustic waves which occur due to contact with other contact pads, so the contact or non-contact condition of each pad can be measured

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Magnetics, IEEE Transactions on  (Volume:32 ,  Issue: 5 )