Defect-Enhanced Polarization Switching in the Improper Ferroelectric LuFeO3
Publication Type
Journal Article
Authors
Barrozo, P, D.R Småbråten, Y.-L Tang, B Prasad, S Saremi, R Ozgur, V Thakare, R.A Steinhardt, M.E Holtz, V.A Stoica, L.W Martin, D.G Schlom, S.M Selbach, Ramamoorthy Ramesh
DOI
Abstract
Results of switching behavior of the improper ferroelectric LuFeO3 are presented. Using a model set of films prepared under controlled chemical and growth-rate conditions, it is shown that defects can reduce the quasi-static switching voltage by up to 40% in qualitative agreement with first-principles calculations. Switching studies show that the coercive field has a stronger frequency dispersion for the improper ferroelectrics compared to a proper ferroelectric such as PbTiO3. It is concluded that the primary structural order parameter controls the switching dynamics of such improper ferroelectrics. © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Journal
Advanced Materials
Year of Publication
2020
ISSN
09359648
Notes
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