Glassy metal disk
AssigneeMarvell World Trade Ltd.
InventorSehat Sutardja
Life of this patent
Estimating the term…
Abstract
A hard drive platter comprises a substrate that includes glassy metal. At least one magnetic layer is arranged on the substrate. The glassy metal includes at least three of zirconium, titanium, nickel, copper, and/or beryllium. A perpendicular recording system comprises the hard drive platter. A hard disk drive comprises the hard drive platter. A computer comprises the hard disk drive. A digital camera comprises the hard drive platter. A portable media player comprises the hard drive platter. An insulating layer and/or an Aluminum layer may be located between the glassy metal substrate and the at least one magnetic layer.
Claims17
A hard drive platter comprising:
- a substrate comprising a first surface, a second surface, and a glassy metal layer, wherein the glassy metal layer provides a main carrier of (i) the substrate, and (ii) the hard drive platter, and wherein the glassy metal layer includes each of zirconium, titanium, nickel, copper, and beryllium;
- and
- at least one magnetic layer arranged on at least one of the first surface or the second surface.
A hard drive platter comprising:
- a substrate comprising a first surface and a second surface, wherein the substrate consists of a single layer, wherein the single layer includes glassy metal, and wherein the glassy metal includes each of zirconium, titanium, nickel, copper, and beryllium;
- and
- at least one magnetic layer arranged on at least one of the first surface or the second surface.
A hard driver platter comprising:
- a substrate comprising a glassy metal layer, wherein the glassy metal layer provides a main carrier of (i) the substrate, and (ii) the hard drive platter, wherein the glassy metal layer includes each of zirconium, titanium, nickel, copper, and beryllium, and wherein the substrate comprises
- a first surface, and
- a second surface (i) opposing the first surface, and (ii) substantially located in a single plane;
- a strengthening layer having a third surface and a fourth surface, wherein the third surface is arranged on the first surface;
- and
- at least one magnetic layer arranged on the fourth surface.
A hard drive platter comprising:
- a substrate comprising a first surface, a second surface, and a glassy metal layer, wherein the glassy metal layer provides a base material layer of (i) the substrate, and (ii) the hard drive platter, and wherein the glassy metal layer includes each of zirconium, titanium, nickel, copper, and beryllium;
- and
- at least one magnetic layer arranged on at least one of the first surface or the second surface,
- wherein the hard drive platter includes an opening configured to receive a hard disk drive spindle.
A hard drive platter comprising:
- a substrate comprising a first surface and a second surface, wherein the substrate consists of glassy metal, and wherein the glassy metal includes each of zirconium, titanium, nickel, copper, and beryllium;
- and
- at least one magnetic layer arranged on at least one of the first surface or the second surface.
Dependencies are inferred from the claim text.