Read Head Sensor With Balanced Shield Design
AssigneeWestern Digital Technologies, Inc.
InventorsXiaoyong LIU, Goncalo BAIAO DE ALBUQUERQUE, Daniele MAURI, Yukimasa OKADA
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Abstract
The present disclosure generally relates to a read head of a data storage device. The read head includes a read sensor sandwiched between two shields. The shields can have different materials as well as a different number of layers. Furthermore the shields can be fabricated by different processes and have different heights and thicknesses. The ratio of the thickness to the height for the shields are substantially identical to ensure that the saturation field are substantially identical and balanced.
Claims20
A magnetic read head, comprising:
- a first shield, wherein the first shield comprises one or more first shield layers;
- a sensor disposed on the first shield;
- and
- a second shield disposed on the first shield, wherein the second shield comprises one or more second shield layers, wherein one or more of the first shield and the second shield comprises a plurality of layers, and wherein the first shield and the second shield have substantially identical magnetic saturation fields.
A magnetic read head, comprising:
- a first shield, wherein the first shield comprises a plurality of first shield layers;
- a sensor disposed on the first shield;
- and
- a second shield disposed on the first shield, wherein the second shield comprises one or more second shield layers, and wherein the first shield and the second shield have substantially identical magnetic saturation fields.
A magnetic read head, comprising:
- a first shield, wherein the first shield comprises one or more first shield layers;
- a sensor disposed on the first shield;
- and
- a second shield disposed on the first shield, wherein the second shield comprises a plurality of second shield layers, and wherein the first shield and the second shield have substantially identical magnetic saturation fields.
Dependencies are inferred from the claim text.