Perpendicular magnetic recording medium
AssigneeFujitsu Limited
InventorsMaki Maeda, Hiroto Takeshita, Takuya Uzumaki
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Abstract
The present invention provides a perpendicular magnetic recording medium that reduces medium noise and achieves thermal stability of recording magnetization. This perpendicular magnetic recording medium has a substrate and a recording layer formed by single-layered magnetic nanoparticles that are aligned at uniform intervals. An auxiliary magnetic film that is thinner than the recording layer is interposed between the substrate and the recording layer. The magnetization of the magnetic nanoparticles is secured by the exchange interaction effect of the auxiliary magnetic film.
Claims16
A perpendicular magnetic recording medium having a recording layer over a substrate, the medium comprising:
- the recording layer that is a single layer formed by aligning magnetic nanoparticles of uniform particle sizes at uniform intervals;
- and
- an auxiliary magnetic film that is located between the recording layer and the substrate at such a position that has an exchange interaction effect on the magnetic nanoparticles.
A magnetic recording device comprising a magnetic recording medium that includes:
- a recording layer that is a single layer formed by aligning magnetic nanoparticles of uniform particle sizes at uniform intervals;
- and an auxiliary magnetic film that is located between the recording layer and a substrate at such a position that has an exchange interaction effect on the magnetic nanoparticles.
Dependencies are inferred from the claim text.