Perpendicular Magnetic Anisotropy in FePt Patterned Media Employing a CrV Seed Layer

Title
Perpendicular Magnetic Anisotropy in FePt Patterned Media Employing a CrV Seed Layer
Authors
김현수노진서노종욱천동원김성만정상현강호관정원용이우영
Keywords
Patterned Media; FePt; CrV underlayer; E-beam lithography
Issue Date
2011-12
Publisher
Nanoscale research letters
Citation
VOL 6, NO 1, 1-6
Abstract
A thin FePt film was deposited onto a CrV seed layer at 400°C and showed a high coercivity (~3,400 Oe) and high magnetization (900–1,000 emu/cm3) characteristic of L10 phase. However, the magnetic properties of patterned media fabricated from the film stack were degraded due to the Ar-ion bombardment. We employed a deposition-last process, in which FePt film deposited at room temperature underwent lift-off and post-annealing processes, to avoid the exposure of FePt to Ar plasma. A patterned medium with 100-nm nano-columns showed an out-of-plane coercivity fivefold larger than its in-plane counterpart and a remanent magnetization comparable to saturation magnetization in the out-of-plane direction, indicating a high perpendicular anisotropy. These results demonstrate the high perpendicular anisotropy in FePt patterned media using a Cr-based compound seed layer for the first time and suggest that ultra-high-density magnetic recording media can be achieved using this optimized top-down approach.
URI
http://pubs.kist.re.kr/handle/201004/40638
ISSN
1931-7573
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE