Ferroelectric annular domains in hexagonal manganites

J. Li, H. X. Yang, H. F. Tian, S. W. Cheong, C. Ma, S. Zhang, Y. G. Zhao, J. Q. Li

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20 Scopus citations


Experimental observations and theoretical simulations for the ferroelectric (FE) domains in multiferroic RMnO3 (R=Ho-Lu, Y, and Sc) demonstrate that annular domains can appear in the topological Kosterlitz-Thouless (KT) phase in coexistence with the "cloverleaf" vortices. Moreover, the annular domains often adopt the multilayered structures as indexed by the annular number. The double-layered FE domains, an energetically favored structure, are commonly found in RMnO3. Thermal annealing experiments directly show exchanges between large annular domains and cloverleaf vortices above the trimerization-structural transition temperature Tc. The temperature evolution of the FE domains has been analyzed by using the six-state clock model through Monte Carlo simulations. Based on careful in situ SEM observations, the dynamic properties of annular domains and interplay among domain walls have been briefly discussed.

Original languageEnglish (US)
Article number094106
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number9
StatePublished - Mar 12 2013

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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