Electrostatic topology of ferroelectric domains in YMnO$_3$

Details Electrostatic topology of ferroelectric domains in YMnO$_3$ Electrostatic topology of ferroelectric domains in YMnO$_3$

2010-09-09

arxiv.org/abs/1101.3565v1

Appl. Phys. Lett. 97, 012904 (2010)

Physics

Condensed Matter

Materials Science

Scientific paper

Trimerization-polarization domains in ferroelectric hexagonal YMnO$_3$ were resolved in all three spatial dimensions by piezoresponse force microscopy. Their topology is dominated by electrostatic effects with a range of 100 unit cells and reflects the unusual electrostatic origin of the spontaneous polarization. The response of the domains to locally applied electric fields explains difficulties in transferring YMnO$_3$ into a single-domain state. Our results demonstrate that the wealth of non-displacive mechanisms driving ferroelectricity that emerged from the research on multiferroics are a rich source of alternative types of domains and domain-switching phenomena.

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