Effects of interdot dipole coupling in mesoscopic epitaxial Fe(100) dot arrays

Authors
Xu, YB Hirohata, A Gardiner, SM Tselepi, M Rothman, J Klaui, M Lopez-Diaz, L Bland, JAC Chen, Y Cambril, E Rousseaux, F
Citation
Yb. Xu et al., Effects of interdot dipole coupling in mesoscopic epitaxial Fe(100) dot arrays, IEEE MAGNET, 37(4), 2001, pp. 2055-2057
Citations number
21
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
2055 - 2057
Database
ISI
SICI code
0018-9464(200107)37:4<2055:EOIDCI>2.0.ZU;2-O
Abstract
The domain structure and the coercivity of epitaxial Fe(100) circular dot a rrays of different diameters and separations have been studied using magnet ic force microscopy (MFM) and focused magneto-optical Kerr effect (MOKE). T he MTM images of the 1 mum diameter single domain dot arrays show direct ev idence of strong interdot dipole coupling when the separation is reduced do wn to 0.1 mum. The coercivity of the dots is also found to be dependent on the separation, indicating the effect of the interdot dipole coupling on th e magnetization reversal process.