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Article Dans Une Revue Scientific Reports Année : 2022

Correlative imaging of ferroelectric domain walls

Iaroslav Gaponenko
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Ulises Acevedo-Salas
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Nazanin Bassiri-Gharb
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Patrycja Paruch
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Résumé

Abstract The wealth of properties in functional materials at the nanoscale has attracted tremendous interest over the last decades, spurring the development of ever more precise and ingenious characterization techniques. In ferroelectrics, for instance, scanning probe microscopy based techniques have been used in conjunction with advanced optical methods to probe the structure and properties of nanoscale domain walls, revealing complex behaviours such as chirality, electronic conduction or localised modulation of mechanical response. However, due to the different nature of the characterization methods, only limited and indirect correlation has been achieved between them, even when the same spatial areas were probed. Here, we propose a fast and unbiased analysis method for heterogeneous spatial data sets, enabling quantitative correlative multi-technique studies of functional materials. The method, based on a combination of data stacking, distortion correction, and machine learning, enables a precise mesoscale analysis. When applied to a data set containing scanning probe microscopy piezoresponse and second harmonic generation polarimetry measurements, our workflow reveals behaviours that could not be seen by usual manual analysis, and the origin of which is only explainable by using the quantitative correlation between the two data sets.
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hal-03517049 , version 1 (07-01-2022)

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Iaroslav Gaponenko, Salia Cherifi Cherifi-Hertel, Ulises Acevedo-Salas, Nazanin Bassiri-Gharb, Patrycja Paruch. Correlative imaging of ferroelectric domain walls. Scientific Reports, 2022, 12 (1), pp.165. ⟨10.1038/s41598-021-04166-y⟩. ⟨hal-03517049⟩
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