@article{Barrozo2020, keywords = {Defects, Iron compounds, Ferroelectric materials, Ferroelectricity, Calculations, Growth rate, Lead titanate, Lutetium compounds, Switching, Enhanced polarization, First-principles calculation, Frequency dispersion, Improper ferroelectrics, Structural order parameter, Switching behaviors, Switching dynamics, Switching voltages}, author = {P Barrozo and D.R Sm{\r a}br{\r a}ten and Y.-L Tang and B Prasad and S Saremi and R Ozgur and V Thakare and R.A Steinhardt and M.E Holtz and V.A Stoica and L.W Martin and D.G Schlom and S.M Selbach and Ramamoorthy Ramesh}, title = {Defect-Enhanced Polarization Switching in the Improper Ferroelectric LuFeO3}, 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. {\textcopyright} 2020 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim}, year = {2020}, booktitle = {Advanced Materials}, journal = {Advanced Materials}, series = {Advanced Materials}, institution = {Wiley-VCH Verlag}, publisher = {Wiley-VCH Verlag}, issn = {09359648}, doi = {10.1002/adma.202000508}, note = {cited By 0}, language = {eng}, }