Revealing antiphase-domain dynamics in alloys by combining advanced statistical techniques with x-ray photon correlation spectroscopy

Lorenz-M. Stadler, Bogdan Sepiol, Jan W. Kantelhardt, Ivo Zizak, Gerhard Grübel, and Gero Vogl
Phys. Rev. B 69, 224301 – Published 16 June 2004

Abstract

The dynamics of antiphase-boundary motion is investigated by the emerging method of x-ray photon correlation spectroscopy. Time correlations of intensity fluctuations from the fundamental (110) and from the superstructure (100) reflection of the B2-ordered Co60Ga40 intermetallic phase are analyzed. By applying detrended fluctuation analysis the observed correlation behavior can be unambiguously attributed to dynamics of antiphase domains. From the temperature dependence an activation energy for this dynamics is derived—in good agreement with results from Monte Carlo simulations. The study underlines the potential of the method for investigations of slow dynamics in hard-condensed matter.

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  • Received 23 January 2004

DOI:https://doi.org/10.1103/PhysRevB.69.224301

©2004 American Physical Society

Authors & Affiliations

Lorenz-M. Stadler1,*, Bogdan Sepiol1, Jan W. Kantelhardt2, Ivo Zizak3, Gerhard Grübel4,†, and Gero Vogl1

  • 1Institut für Materialphysik, Universität Wien, Strudlhofgasse 4, A-1090 Wien, Austria
  • 2Fachgruppe Theorie, Fachbereich Physik und Zentrum für Computational Nanoscience, Martin-Luther-Universität Halle-Wittenberg, D-06099 Halle, Germany
  • 3Hahn-Meitner-Institut Berlin, Glienicker Straße 100, D-14109 Berlin, Germany
  • 4European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France

  • *Electronic address: lstadler@ap.univie.ac.at
  • Present address: Deutsches Elektronen Synchrotron (Hasylab), Notkestraße 85, D-22607 Hamburg, Germany.

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Issue

Vol. 69, Iss. 22 — 1 June 2004

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