Data storage system with media having shape memory alloy protected layer
First Claim
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1. A magnetic disk for a hard disk drive, comprising:
- a substrate;
a magnetic layer adjacent to said substrate; and
,a layer of shape memory alloy material adjacent to said magnetic layer.
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Abstract
A disk for a hard disk drive. The disk includes a protective layer of shape memory alloy material over a magnetic layer. Contact between a head of the drive and the shape memory alloy material will cause frictional heat. The heat will cause a solid-solid phase transformation of the shape memory alloy material that will absorb energy and reduce wear. After head-disk contact terminates the shape memory alloy material will resume its initial solid phase. The shape memory alloy material may be relatively thin thereby improving the magnetic characteristics of the disks while providing a protective coating.
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Citations
18 Claims
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1. A magnetic disk for a hard disk drive, comprising:
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a substrate; a magnetic layer adjacent to said substrate; and
,a layer of shape memory alloy material adjacent to said magnetic layer. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A hard disk drive, comprising:
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a base plate; a spindle motor coupled to said base plate; a disk coupled to said spindle motor, said disk including; a substrate; a magnetic layer adjacent to said substrate; a layer of shape memory alloy material adjacent to said magnetic layer; an actuator arm mounted to said base plate; a voice coil motor coupled to said actuator arm; and
,a head coupled to said actuator arm and said disk. - View Dependent Claims (8, 9, 10, 11, 12, 14)
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13. A method for fabricating a disk of a hard disk drive, comprising:
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forming a layer of magnetic material over a substrate; and
,forming a layer of shape memory alloy material over the layer of magnetic material. - View Dependent Claims (15, 16)
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- 17. The method of 13, wherein the shape memory alloy material is formed contiguous to the magnetic material.
Specification