Arnalds, Unnar B., Papaioannou, Evangelos Th., Hase, Thomas P. A., Raanaei, Hossein, Andersson, Gabriella, Charlton, T. R., Langridge, S. and Hjorvarsson, Bjorgvin. (2010) Magnetic structure and diffracted magneto-optics of patterned amorphous multilayers. Physical Review B (Condensed Matter and Materials Physics), Vol.82 (No.4). Article no. 144434. ISSN 1098-0121

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Abstract

We present magneto-optical Kerr effect measurements of patterned arrays of Co68Fe24Zr8 / Al2O3 amorphous multilayers. The multilayers were patterned in two dimensions into two different arrangements of circular and ellipsoidal islands. Magnetization loops were recorded in a longitudinal geometry using both the specularly reflected beam as well as diffracted beams scattered off the patterned films. The magnetization of the patterned structures is significantly different from the magnetization of a continuous multilayer owing to the lateral confinement of the pattern and the introduction of additional dipolar coupling between the layers at the edges of the islands. By investigating the magnetic response at the different diffraction orders from the two different configurations of islands we are able to observe the magnetization at different length scales and determine the magnetic response of the circular and ellipsoidal islands individually.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Anisotropy, Magnetic structure, Magnetooptics, Amorphous substances
Journal or Publication Title:	Physical Review B (Condensed Matter and Materials Physics)
Publisher:	American Physical Society
ISSN:	1098-0121
Official Date:	25 October 2010
Volume:	Vol.82
Number:	No.4
Number of Pages:	8
Page Range:	Article no. 144434
Identification Number:	10.1103/PhysRevB.82.144434
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Sweden. Vetenskapsrådet [Research Council], Knut och Alice Wallenbergs Stiftelse, Icelandic Nanoscience and Nanotechnology program, Icelandic Research Fund, United States. Dept. of Energy
Grant number:	DE-AC02-98CH10886 (DOE)
URI:	http://wrap.warwick.ac.uk/id/eprint/4930

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