Near-field resonance shifts of ferroelectric barium titanate domains upon low-temperature phase transition
Near-field resonance shifts of ferroelectric barium titanate domains upon low-temperature phase transition
Döring, J.; von Ribbeck, H.-G.; Fehrenbacher, M.; Kehr, S. C.; Eng, L. M.
Scattering scanning near-field optical microscopy (s-SNOM) has been established as an excellent tool to probe domains in ferroelectric crystals at room temperature. Here, we apply the s-SNOM possibilities to quantify low-temperature phase transitions in barium titanate single crystals by both temperature-dependent resonance spectroscopy and domain distribution imaging. The orthorhombic-to-tetragonal structural phase transition at 263 K manifests in a change of the spatial arrangement of ferroelectric domains as probed with a tunable free-electron laser. More intriguingly, the domain distribution unravels non-favored domain configurations upon sample recovery to room temperature as explainable by increased sample disorder. Ferroelectric domains and topographic influences are clearly deconvolved even at low temperatures, since complementing our s-SNOM nano-spectroscopy with piezoresponse force microscopy and topographic imaging using one and the same atomic force microscope and tip.
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- Radiation Source ELBE DOI: 10.17815/jlsrf-2-58
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- DOI: 10.17815/jlsrf-2-58 is cited by this (Id 20730) publication
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Applied Physics Letters 105(2014), 053109
Online First (2014) DOI: 10.1063/1.4892364
Cited 14 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-20730