Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Dependence of recording density on Al underlayer thickness in laser-assisted magnetic recording media

Not Accessible

Your library or personal account may give you access

Abstract

A laser-assisted magnetic recording method is expected to be suited for high-density recording [1-3]. TbFeCo media are desirable for the laser-assisted magnetic recording because they have high perpendicular magnetic anisotropy and coercivity. However, small magnetic domains on TbFeCo media tend to be recorded irregularly in size by their wall motion due to the strong exchange coupling. Recently, it was demonstrated that a NiP underlayer weakens the exchange coupling of a TbFeCo film [4]. We have also reported that an Al-underlayered TbFeCo medium improves the recording density drastically [5]. A thin Al underlayer has dense and minute grain structures; thereby, these structures become the pinning sites of domain-wall movement. In this paper, we report the dependence of recording density on Al underlayer thickness. We investigated the effect of the Al underlayer thickness from the viewpoint of a read/write performance.

© 2003 Optical Society of America

PDF Article
More Like This
Hybrid head for near field assisted magnetic recording

S. Miyanishi, N. Iketani, K. Takayama, K. Innami, I. Suzuki, T. Kitazawa, Y. Murakami, K. Kojima, and A. Takahashi
TuA2 Optical Data Storage (ODS) 2007

Hybrid Recording Material Candidates for Storage Densities beyond Tera bit/in2-CoCrPt, TbFeCo, Pd/Co, FePt

Norio Ota, Nobuyuki Inaba, Teruaki Takeuchi, Satoshi Matsunuma, Hideo Daimon, and Hiroyuki Awano
MC1 Optical Data Storage (ODS) 2003

Ultrafast laser recording in optical near-field for high density optical storage

W.J. Wang, M.H. Hong, D.J. Wu, Y.W. Goh, Y.H. Wu, and T.C. Chong
TuE9 Optical Data Storage (ODS) 2003

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved