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MERGED READ/WRITE HEAD FOR PERPENDICULAR RECORDING

IP.com Disclosure Number: IPCOM000015548D
Original Publication Date: 2002-Jan-07
Included in the Prior Art Database: 2003-Jun-20
Document File: 1 page(s) / 33K

Publishing Venue

IBM

Abstract

We disclose a merged R/W head for perpendicular recording. The structure is as follows: S1/sensor/S2/spacer/Coil1/spacer/main pole/spacer/Coil2/spacer/S3. Shields S1/S2 are ferromagnetic shields for the read sensor whereas shields S2/S3 provide flux return path for the main pole. The main pole is sandwiched between the coils carrying current of opposite polarity. The fields from Coil1/2 add at the main pole while cancel at the read sensor. The spacer layers are electrically insulating.

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MERGED READ/WRITE HEAD FOR PERPENDICULAR RECORDING

We disclose a merged R/W head for perpendicular recording. The structure is as follows: S1/sensor/S2/spacer/Coil1/spacer/main pole/spacer/Coil2/spacer/S3. Shields S1/S2 are ferromagnetic shields for the read sensor whereas shields S2/S3 provide flux return path for the main pole. The main pole is sandwiched between the coils carrying current of opposite polarity. The fields from Coil1/2 add at the main pole while cancel at the read sensor. The spacer layers are electrically insulating.

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