Dynamic vortex − antivortex interaction and magnetization dynamics of a single cross-tie wall


Dynamic vortex − antivortex interaction and magnetization dynamics of a single cross-tie wall

Kuepper, K.; Buess, M.; Raabe, J.; Quitmann, C.; Fassbender, J.

We report the direct investigation of the vortex-antivortex interaction by imaging the magnetic excitation spectrum of a single cross-tie wall by means of x-ray magnetic circular dichroism - photoemission electron microscopy (XMCD-PEEM). The 10 × 6 μm2 Permalloy rectangle of 20 nm thickness was excited by a short magnetic in plane pulse with a maximum field value of about 20 Oe. The high temporal and lateral resolution allows a detailed quantitative analysis of the magnetodynamic excitations. We find new eigenmodes in the frequency domain which are characteristic for the vortex-antivortex interaction in a single cross-tie wall. We discuss our experiment in the light of micromagnetic simulations.

Keywords: PACS numbers: 75.40.Gb; 75.60.-d; 75.60.Ch; 75.75.+a

  • Lecture (Conference)
    4th International Workshop on Nanoscale Spectroscopy and Nanotechnology, 17.-21.09.2006, Rathen, Germany

Permalink: https://www.hzdr.de/publications/Publ-8886
Publ.-Id: 8886