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US 2016/0078889 A1Published application
Sensor structure having layer with high magnetic moment
AssigneeSeagate Technology LLC
InventorsVictor Boris Sapozhnikov, Kevin McNeill
Life of this patent
Estimating the term…
Abstract
A reader sensor having a composite shield and a sensor stack. The composite shield includes a high magnetic moment layer having a magnetic moment greater than 1.0 T, a low magnetic moment layer, and a spacer therebetween. The high magnetic moment layer is closer to the stack than the low magnetic moment layer. The high magnetic moment layer may be a single layer or have a plurality of layers.
Claims23
A reader sensor comprising:
- a sensor stack;
- and
- a composite shield including a high magnetic moment (HMM) layer having a magnetic moment greater than 1.0 T, a pinned low magnetic moment (LMM) layer, and a spacer therebetween, wherein the HMM layer is closer to the stack than the pinned LMM layer and is in contact with and adjacent to the stack.
(canceled)
11-17. (canceled)
A reader sensor comprising:
- a top shield;
- a bottom shield;
- and
- a sensor stack between the top shield and the bottom shield;
- wherein one of the top shield or the bottom shield comprises:
- a reference layer,
- a pinned layer,
- a spacer between and in contact with each of the reference layer and the pinned layer, and
- a high magnetic moment (HMM) layer having a magnetic moment of at least 1.2 T and magnetically coupled to the reference layer, the HMM layer adjacent to the sensor stack.
6 more elements
(canceled)
(canceled)
A reader sensor comprising:
- a top shield;
- a bottom shield;
- and
- a sensor stack between the top shield and the bottom shield;
- wherein one of the top shield or the bottom shield comprises:
- a pinned layer,
- a high magnetic moment (HMM) layer having a magnetic moment greater than 1.0 T, the HMM layer comprising a HMM material having a magnetic moment of at least 1.2 T, and
- a spacer between the pinned layer and the HMM layer, with the HMM layer in contact with and adjacent to the sensor stack.
5 more elements
Dependencies are inferred from the claim text.