Phys. Rev. Lett. 94, 217204 (2005) [4 pages]Quantitative Analysis of Magnetic Excitations in Landau Flux-Closure Structures Using Synchrotron-Radiation Microscopy
J. Raabe1 *, C. Quitmann1, C. H. Back2, F. Nolting1, S. Johnson1, and C. Buehler1 Received 16 December 2004; published 2 June 2005 We have measured the excitation spectrum of six micron magnetic squares using x-ray magnetic circular dichroism. We observe all three excitations expected in a Landau flux-closure pattern. High temporal and spatial resolution allows quantitative analysis of the excitations. A short magnetic in plane pulse excites the magnetic element and we observe precessional motion of the magnetization within the domains as well as a domain wall mode and vortex motion. The vortex moves perpendicular to the excitation field and relaxes without showing a circulating orbit. ©2005 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.94.217204 * Electronic address: joerg.raabe@psi.ch [ Abstract | Previous article | Next article | Issue 21 ] |
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