Bulletin of the American Physical Society
APS March Meeting 2010
Volume 55, Number 2
Monday–Friday, March 15–19, 2010; Portland, Oregon
Session A34: Focus Session: Nanomagnetism -- Nanostructured Films
8:00 AM–10:48 AM,
Monday, March 15, 2010
Sponsoring Units: DMP GMAG
Chair: Kirill Bolotin, Vanderbilt University
Abstract ID: BAPS.2010.MAR.A34.4
Abstract: A34.00004 : Imaging the three dimensional magnetic nanostructure of Co/Pd multilayer media*
8:36 AM–8:48 AM
Preview Abstract Abstract
(University of California, Davis)
Multilayers of Co and Pd (or Pt) are well known for magnetization that points out-of-plane, perpendicular to the surface, but local measurements of the in-plane magnetization remain elusive due to a scarcity of measurement techniques. We used SEM with polarization analysis (SEMPA) to study both continuous films and patterned dots made of pressure-graded Co/Pd multilayer media. Images of all three vector components of the remanent surface magnetization show a rich variety of three dimensional magnetic structures in patterned 2 $\mu $m diameter dots. Labyrinth magnetic domains polarized in the up (+z) and down (-z) directions act as sources and sinks, respectively, for the in-plane magnetization vector field. Larger out-of-plane magnetic domains coincide with the presence of in-plane vortices. In some dots, the distribution of magnetization angles is concentrated along the surface of a cone. These results show that in-plane magnetization in real Co/Pd multilayers plays an important role in the domain configuration of the patterned films.
*Work at UCD supported in part by NSF-ECCS0925626 and CITRIS.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.A34.4
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