期刊
APPLIED PHYSICS LETTERS
卷 97, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3460286
关键词
atomic force microscopy; dielectric polarisation; electric domains; electrostatics; ferroelectric materials; piezoelectricity; yttrium compounds
资金
- Deutsche Telekom AG
- DFG [SFB 608]
- EU
Trimerization-polarization domains in ferroelectric hexagonal YMnO3 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 YMnO3 into a single-domain state. Our results demonstrate that the wealth of nondisplacive mechanisms driving ferroelectricity that emerged from the research on multiferroics are a rich source of alternative types of domains and domain-switching phenomena. (C) 2010 American Institute of Physics. [doi:10.1063/1.3460286]
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