Abstract: A magnetic storage medium is formed of magnetic nanoparticles that are encapsulated within nanotubes (e.g., 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.

Abstract: A magnetic recording medium is composed of a nonmagnetic support provided with on one side of the support a magnetic layer containing a ferromagnetic powder and a binder, and a backing layer on the other side of the nonmagnetic support, wherein the nonmagnetic support is a polyester film having an intrinsic viscosity of from 0.40 to 0.60 dl/g, and contains fillers having filler diameters of from 10 to 500 nm at a filler density of from 1/100 to 50/100 ?m2.

Abstract: A magnetic recording tape comprising a magnetic layer, a flexible support and a back coat layer in this order, wherein the support is a polyester film having an intrinsic viscosity of from 0.40 to 0.60 dl/g and a number average molecular weight of from 12,000 to 24,000, a surface of the back coat layer has protrusions having a height of 100 nm or more measured with an atomic force microscope in a density of from 10 to 500 in 90 ?m square, and a ratio of a total number of protrusions having a height of 50 nm or more on the surface of the back coat layer to a total number of protrusions having a height of 100 nm or more on the surface of the back coat layer is from 10 to 100.