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Direct observation of polar tweed in LaAlO3

Ekhard Salje et al.
HAL (France) · Papers
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Abstract Polar tweed was discovered in mechanically stressed LaAlO3 . Local patches of strained material (diameter ca. 5 μm) form interwoven patterns seen in birefringence images, Piezo-Force Microscopy (PFM) and Resonant Piezoelectric Spectroscopy (RPS). PFM and RPS observations prove unequivocally
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