Size and shape effects of patterned polycrystalline islands

Author

He, Lianna ; Wang, Frank Z. ; Mapps, D.J. ; Clegg, W.W. ; Wilton, D.T. ; Robinson, P.

Author_Institution

SECEE, Univ. of Plymouth, UK

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3508

Lastpage

3510

Abstract

Patterned polycrystalline cobalt islands with different sizes and shapes have been simulated by a micromagnetic simulator. An elliptic shape is found to be preferred for patterned islands to form a uniform single domain demagnetised state and have sharper squareness compared with square islands. Therefore, in a single-bit-per-island recording system, the elliptic islands could lead to a stable state and a predictable overwrite process and act independently even in a closely packed arrays

Keywords

cobalt; magnetic domains; magnetic particles; magnetic recording; particle size; superparamagnetism; Co; Co arrays; closely packed arrays; elliptic shape; micromagnetic simulator; patterned islands; patterned polycrystalline islands; shape effects; sharper squareness; single-bit-per-island recording system; size effects; uniform single domain demagnetised state; Cobalt; Computational modeling; Crystallization; Magnetic anisotropy; Magnetic materials; Magnetic recording; Magnetization; Micromagnetics; Perpendicular magnetic recording; Shape;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800572

Filename

800572