Contact-free reversible switching of improper ferroelectric domains by electron and ion irradiation

  title={Contact-free reversible switching of improper ferroelectric domains by electron and ion irradiation},
  author={Erik D. Roede and Aleksander B. Mosberg and Donald M. Evans and Edith D. Bourret and Zewu Yan and Antonius T. J. van Helvoort and Dennis Meier},
  journal={APL Materials},
Focused ion beam (FIB) and scanning electron microscopy (SEM) are used to reversibly switch improper ferroelectric domains in the hexagonal manganite ErMnO$_3$. Surface charging is achieved by local ion (positive charging) and electron (positive and negative charging) irradiation, which allows controlled polarization switching without the need for electrical contacts. Polarization cycling reveals that the domain walls tend to return to the equilibrium configuration obtained in the as-grown… 
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