Direct Observation of Fractal-Dimensional Percolation in the 3D Cluster Dynamics of a Ferroelectric Supercrystal

Ludovica Falsi, Marco Aversa, Fabrizio Di Mei, Davide Pierangeli, Feifei Xin, Aharon J. Agranat, Eugenio Delre

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We perform percolation analysis of crossed-polarizer transmission images in a biased nanodisordered bulk KTN:Li perovskite. Two distinct percolative transitions are identified at two electric field thresholds. The low-field transition involves a directional fractal chain of dimension D=1.65, while the high-field transition has a dimension D>2. Direct cluster imaging in the volume is achieved using high-resolution orthographic 3D projections based on giant refraction. Percolation is attributed to a full-3D domain reorientation that mediates the transition from a ferroelectric supercrystal state to a disordered domain mosaic.

Original languageAmerican English
Article number037601
JournalPhysical Review Letters
Volume126
Issue number3
DOIs
StatePublished - 21 Jan 2021

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© 2021 American Physical Society.

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