Co-Pt Clusters on a Highly Oriented Fe-Co Soft Underlayer in a Co-Pt-TiO2 Perpendicular Medium
Year: 2006
Type: article
Abstract: A granular-type medium with a highly oriented high-Bs Fe-Co soft underlayer (SUL) and a thin Ru intermediate layer of 4 nm was prepared. It displayed low Hch (Hc in the hard axis direction) value of 1.1 Oe in the SUL and high Hc of 6.0 kOe in a Co-Pt-TiO2 recording layer. The recording layer in the medium has a novel granular structure, namely, well-isolated clusters composed of 5-15 pieces of small Co-Pt grains 4-7 nm in diameter segregated by TiO2. The clusters were oval, with an average area of 213 nm2. At present, the shape and arrangement of the clusters cannot be controlled successfully.
Author: K. Shintaku
Institution: Akita Industrial Technology Center
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2018273631