Tunnel magnetoresistive sensor having conductive ceramic layers
AssigneeInternational Business Machines Corporation
InventorsRobert G. Biskeborn, Calvin S. Lo, Philip M. Rice, Teya Topuria
Life of this patent
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Abstract
An apparatus, according to one embodiment, includes a sensor having an active region, a magnetic shield adjacent the active region, a spacer between the active region and the magnetic shield, a second magnetic shield on an opposite side of the active region as the magnetic shield, and a second spacer between the active region and the second magnetic shield. Both spacers include an electrically conductive ceramic layer. The sensor is an electronic lapping guide.
Claims25
An apparatus, comprising:
- a sensor having an active region;
- a magnetic shield adjacent the active region;
- and
- a spacer between the active region and the magnetic shield, wherein the spacer includes an electrically conductive ceramic layer, wherein the sensor is an electronic lapping guide.
An apparatus, comprising:
- a sensor having an active region;
- a magnetic shield adjacent the active region;
- a capping layer between the active region and the magnetic shield;
- a first spacer between the active region and the capping layer,
- wherein the first spacer includes a ceramic layer;
- a second spacer between the capping layer and the magnetic shield;
- a second magnetic shield on an opposite side of the active region as the magnetic shield;
- and
- a third spacer between the active region and the second magnetic shield,
- wherein the second spacer and/or the third spacer includes an electrically conductive ceramic layer.
An apparatus, comprising:
- an array of sensors sharing a common media-facing surface, wherein each sensor has an active region;
- a magnetic shield adjacent the active region;
- a spacer between the active region and the magnetic shield;
- a second magnetic shield on an opposite side of the active region as the magnetic shield;
- and
- a second spacer between the active region and the second magnetic shield, wherein both spacers include an electrically conductive ceramic layer.
An apparatus, comprising:
- a sensor having an active region;
- a magnetic shield adjacent the active region;
- a capping layer between the active region and the magnetic shield;
- and
- a spacer between the active region and the capping layer,
- wherein the spacer includes an electrically conductive ceramic layer.
Dependencies are inferred from the claim text.