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Construction of Tunnel Junction head with flux guides

IP.com Disclosure Number: IPCOM000014273D
Original Publication Date: 2000-Jan-01
Included in the Prior Art Database: 2003-Jun-19
Document File: 1 page(s) / 27K

Publishing Venue

IBM

Abstract

After patterning the sensor, using a lift-off process, insulating layers and the flux guides are deposited. First an insulating layer is deposited to insulate the sensor edges. Then the flux guide is deposited followed by another insulating layer. The flux guide is then insulated both from the sensor and the current carrying leads or shields. Using this configuration, any electrical shorting between the shields and the flux guide at the air bearing surface does not degrade the sensor performance. This implies more shorter gap length heads are possible with the structure disclosed here.

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Construction of Tunnel Junction head with flux guides

   After patterning the sensor, using a lift-off process, insulating layers and
the flux guides are deposited. First an insulating layer is deposited to insulate
the sensor edges. Then the flux guide is deposited followed by another insulating
layer. The flux guide is then insulated both from the sensor and the current
carrying leads or shields. Using this configuration, any electrical shorting
between the shields and the flux guide at the air bearing surface does not
degrade the sensor performance. This implies more shorter gap length heads are
possible with the structure disclosed here.

1