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Open AccessArticle

Hysteresis-Free Piezoresponse in Thermally Strained Ferroelectric Barium Titanate Films

1
Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18221 Prague, Czech Republic
2
Microelectronics Research Unit, University of Oulu, P.O. Box 4500, FI-90014 Oulu, Finland
*
Author to whom correspondence should be addressed.
Electron. Mater. 2021, 2(1), 17-23; https://doi.org/10.3390/electronicmat2010002
Received: 2 December 2020 / Revised: 14 December 2020 / Accepted: 12 January 2021 / Published: 14 January 2021
(This article belongs to the Special Issue Electronic Processes in Ferroelectrics)
Modern technology asks for thin films of sustainable piezoelectrics, whereas electro-mechanical properties of such films are poorly explored and controlled. Here, dynamic and quasi-static polarization, dielectric, and piezoelectric responses were experimentally studied in thin-film stacks of barium titanate sandwiched between electrodes and grown on top of strontium titanate substrate. Accurate piezoelectric characterization was secured by using double beam interferometric technique. All out-of-plane responses were found to be hysteresis-free. Effective piezoelectric coefficient ~50 pm/V and linear strain-voltage characteristic were achieved. The observed behavior was ascribed to field induced out-of-plane polarization, whereas spontaneous polarization is in-plane due to in-plane tensile thermal strain. Hysteresis-free linear piezoresponse was anticipated in thin films on commercial silicon substrates, enabling large thermal strain. View Full-Text
Keywords: barium titanate; piezoelectric; ferroelectric barium titanate; piezoelectric; ferroelectric
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MDPI and ACS Style

Tyunina, M.; Miksovsky, J.; Kocourek, T.; Dejneka, A. Hysteresis-Free Piezoresponse in Thermally Strained Ferroelectric Barium Titanate Films. Electron. Mater. 2021, 2, 17-23. https://doi.org/10.3390/electronicmat2010002

AMA Style

Tyunina M, Miksovsky J, Kocourek T, Dejneka A. Hysteresis-Free Piezoresponse in Thermally Strained Ferroelectric Barium Titanate Films. Electronic Materials. 2021; 2(1):17-23. https://doi.org/10.3390/electronicmat2010002

Chicago/Turabian Style

Tyunina, Marina; Miksovsky, Jan; Kocourek, Tomas; Dejneka, Alexandr. 2021. "Hysteresis-Free Piezoresponse in Thermally Strained Ferroelectric Barium Titanate Films" Electron. Mater. 2, no. 1: 17-23. https://doi.org/10.3390/electronicmat2010002

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