Magnetic storage medium formed of carbon nanotube arrays
View Patent ↗A magnetic storage medium is formed of magnetic nanoparticles that are encapsulated within carbon nanotubes, which are arranged in a substrate to facilitate the reading and writing of information by a read/write head. The substrate may be flexible or rigid. Information is stored on the magnetic nanoparticles via the read/write head of a storage device. These magnetic nanoparticles are arranged into data tracks to store information through encapsulation within the carbon nanotubes. As carbon nanotubes are bendable, the carbon nanotubes may be arranged on flexible or rigid substrates, such as a polymer tape or disk for flexible media, or a glass substrate for rigid disk. A polymer may assist holding the nano-particle filled carbon-tubes to the substrate.
1. A magnetic storage medium, comprising:
a substrate; and
a data layer on top of said substrate, said data layer comprising:
a plurality of magnetic nanoparticles contained within a carbon nanotube; and
a plurality of said carbon nanotubes encapsulated in a matrix.
2. A magnetic storage medium, comprising:
a substrate;
a data layer on top of said substrate. said data layer comprising:
a plurality of magnetic nanoparticles contained within a carbon nanotube; and
a plurality of said carbon nanotubes encapsulated in a matrix; and a shunt layer between said substrate and said data layer, said shunt layer comprising:
a shunt-magnetic nanoparticle contained within a carbon nanotube; and
a plurality of said carbon nanotubes encapsulated in a shunt matrix.
3. The magnetic storage medium of claim 1 , wherein said matrix is comprised of High Density Poly Ethylene.
4. The magnetic storage medium of claim 2 , wherein said shunt-magnetic nanoparticle has low or near zero coercivity.
5. The magnetic storage medium of claim 2 , wherein said shunt-matrix is comprised of High Density Poly Ethylene.
6. The magnetic storage medium of claim 1 , wherein said substrate is rigid.
7. The magnetic storage medium of claim 1 , wherein said substrate is flexible.
8. The magnetic storage medium of claim 1 , wherein said magnetic nanoparticle is selected from the group consisting of Cobalt (Co), Cobalt-nitride, Cobalt-oxide (Co—O), Cobalt-palladium (Co—Pd), Cobalt-platinum (Co—Pt), Iron (Fe), Iron-Gold (Fe—Au), Iron-Chromium (Fe—Cr), Iron-nitride (Fe—N), Iron-oxide (Fe 3 O 4 ), Iron-palladium (Fe—Pt), Fe—Zr—Nb—B, Mn-nitride (Mn—N), Nd—Fe—B, Nd—Fe—B—Nb—Cu, and Nickel (Ni).
9. The magnetic storage medium of claim 2 , wherein said shunt-magnetic nanoparticle is selected from the group consisting of Mn—Zn, single crystal Mn—Zn, and Ni—Zn.
10. The magnetic storage medium of claim 1 , wherein said data layer comprises a mono-layer of said carbon nanotubes.
11. The magnetic storage medium of claim 1 , wherein said data layer comprises a plurality of layers formed of said data tracks.
12. The magnetic storage medium of claim 7 , wherein said flexible substrate is a disc.
13. The magnetic storage medium of claim 7 , wherein said flexible substrate is a tape.
14. The magnetic storage medium of claim 6 , further comprising a data track formed of said carbon nanotubes, said data track having a spiral configuration.
15. The magnetic storage medium of claim 6 , further comprising a data track formed of said carbon nanotubes, said data track having a radial configuration.
16. The magnetic storage medium of claim 2 , further comprising a data track formed of said carbon nanotubes, said data track having a spiral configuration.
17. The magnetic storage medium of claim 2 , further comprising a data track formed of said carbon nanotubes in said data layer. said data track having a concentric ring configuration.
18. The magnetic storage medium of claim 2 , further comprising a data track formed of said carbon nanotubes in said data layer, said data track is organized into a plurality of data sectors.
19. The magnetic storage medium of claim 1 , wherein said magnetic nanoparticle has a high coercivity.
20. The magnetic storage medium of claim 1 , wherein an upper portion of said data layer comprises a plurality of bucky balls within said matrix which reduce friction between said magnetic storage medium and a read/write head.
21. The magnetic storage medium of claim 1 , wherein said magnetic nanoparticle comprises a high coercivity core encapsulated within a shell.
22. The magnetic storage medium of claim 1 , wherein said substrate is made of polytetrafluoucethelyne (PTFE).