Excitations of domain walls pinned at F/AF interface steps

Author

Dantas, Ana L. ; Carriço, Artur S.

Author_Institution

Dept. de Fisica, Univ. do Estado do Rio Grande do Norte, Natal, Brazil

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

3053

Lastpage

3055

Abstract

We study rigid displacement excitations of a Neel wall of a thin uniaxial ferromagnetic film on a two-sublattice antiferromagnetic substrate. An interface step defect pins the domain wall and provides the restoring force that stabilizes the domain wall oscillations. The frequency of the rigid displacement domain wall modes is shown to be of the same order of magnitude as that of the uniform domain modes of the ferromagnetic film, for a wide range of interface exchange energy values

Keywords

antiferromagnetism; exchange interactions (electron); ferromagnetism; interface magnetism; magnetic domain walls; magnetic thin films; Neel wall; domain wall oscillations; domain walls excitations pinning; ferromagnetic-antiferromagnetic interface steps; interface exchange energy values; restoring force; rigid displacement domain wall modes; rigid displacement excitations; thin uniaxial ferromagnetic film; two-sublattice antiferromagnetic substrate; uniform domain modes; Antiferromagnetic materials; Chromium; Iron; Magnetic domain walls; Magnetic domains; Magnetic films; Magnetic moments; Magnetic properties; Pins; Substrates;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908676

Filename

908676