期刊
NATURE COMMUNICATIONS
卷 10, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-09266-y
关键词
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资金
- ERC [308023]
- Plan Nacional project MINECO [MAT2016-77100-C2-1-P, FIS2015-73932-JIN]
- Generalitat de Catalunya [2017-SGR-579, 2017-SGR-1278]
- Severo Ochoa Program (MINECO) [SEV-2017-0706]
- CERCA Programme / Generalitat de Catalunya
- Generalitat de Catalunya
- European Research Council [StG-679451]
- European Research Council (ERC) [308023] Funding Source: European Research Council (ERC)
Converse flexoelectricity is a mechanical stress induced by an electric polarization gradient. It can appear in any material, irrespective of symmetry, whenever there is an inhomogeneous electric field distribution. This situation invariably happens in piezoresponse force microscopy (PFM), which is a technique whereby a voltage is delivered to the tip of an atomic force microscope in order to stimulate and probe piezoelectricity at the nanoscale. While PFM is the premier technique for studying ferroelectricity and piezoelectricity at the nanoscale, here we show, theoretically and experimentally, that large effective piezoelectric coefficients can be measured in non-piezoelectric dielectrics due to converse flexoelectricity.
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