Glassy alloy composites for information technology applications

With the aim of developing a novel preparation process for bit-patterned-media, nano-patterned glassy alloy composite composed of zero-magneto-striction Co–Fe–B amorphous alloy thin film, Pd–Cu–Ni–P glassy alloy and Co/Pd multi-layer with perpendicular magnetization was prepared. Using the commercia...

Full description

Saved in:
Bibliographic Details
Published in:Intermetallics 2010-10, Vol.18 (10), p.1983-1987
Main Authors: Nishiyama, N., Takenaka, K., Togashi, N., Miura, H., Saidoh, N., Inoue, Akihisa
Format: Article
Language:English
Subjects:
A. Composite
Alloy development
B. Magnetic properties
C. Thin films
Density
G. Magnetic applications
Glassy
Magnetization
Nanocomposites
Nanomaterials
Nanostructure
Palladium
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:With the aim of developing a novel preparation process for bit-patterned-media, nano-patterned glassy alloy composite composed of zero-magneto-striction Co–Fe–B amorphous alloy thin film, Pd–Cu–Ni–P glassy alloy and Co/Pd multi-layer with perpendicular magnetization was prepared. Using the commercial imprinting mold, periodic nano hole array with a hole diameter of 90 nm and a pitch of 180 nm was successfully prepared on the surface of Pd-based glassy alloy thin film. By overlaying the Co/Pd multi-layer with perpendicular magnetization and surface polishing, isolated Co/Pd magnetic dots embedded into nano hole array can be obtained. These magnetic dots act as single magnetic domains. In addition, the change in magnetization direction was confirmed under magnetic fields of ±20 kOe. These results suggest that the glassy alloy nano-composite is suitable for BPM of high data density HDD. It is therefore concluded that the preparation method is candidate process for the preparation of BPM of high data density HDD.
ISSN:0966-9795
1879-0216
DOI:10.1016/j.intermet.2010.02.027