Patterning of granular magnetic media with a focused ion beam to produce single-domain islands at > 140 Gbit/in(2)

Authors
Rettner, CT Best, ME Terris, BD
Citation
Ct. Rettner et al., Patterning of granular magnetic media with a focused ion beam to produce single-domain islands at > 140 Gbit/in(2), IEEE MAGNET, 37(4), 2001, pp. 1649-1651
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON MAGNETICS
ISSN journal
00189464 → ACNP
Volume
37
Issue
4
Year of publication
2001
Part
1
Pages
1649 - 1651
Database
ISI
SICI code
0018-9464(200107)37:4<1649:POGMMW>2.0.ZU;2-6
Abstract
We have used a focused ion beam to directly pattern thin- film granular per pendicular Co70Cr18Pt12 media. By cutting trenches similar to6 nm deep in t he similar to 20 mn media, we have produced square arrays of magnetically i solated islands with periods in the range 65-500 mn. At periods below simil ar to 130 mn we observe only single magnetic domains, which exhibit a rough "checker-board" pattern of upon ac demagnetization. We have patterned at d ensities of over 140 Gbit/in(2).