Cone phase and magnetization fluctuations in Au/Co/Au thin films near the spin-reorientation transition

K. A. Seu, S. Roy, J. J. Turner, S. Park, C. M. Falco, S. D. Kevan

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Using coherent soft x-ray scattering we have measured slow magnetization fluctuations in an Au/Co/Au heterostructure near a thermally driven spin-reorientation phase transition. The intermediate scattering function is well described by a stretched exponential, suggesting cooperative motion through the transition. The decay times were found to exhibit a pronounced maximum as a function of temperature. We argue that the transition proceeds through a cone phase in which the local magnetization evolves continuously from a perpendicular to longitudinal orientation. Our results demonstrate a different and fruitful way to probe the complex spatiotemporal dynamics that arise in unusual magnetic phases with competing anisotropies.

Original languageEnglish (US)
Article number012404
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number1
DOIs
StatePublished - Jul 14 2010

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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