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Hysteresis-free piezoresponse in thermally strained ferroelectric barium titanate films
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SYSNO ASEP 0552304 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Hysteresis-free piezoresponse in thermally strained ferroelectric barium titanate films Author(s) Tyunina, Marina (FZU-D) ORCID
Mikšovský, Jan (FZU-D) RID, ORCID
Kocourek, Tomáš (FZU-D) RID, ORCID, SAI
Dejneka, Alexandr (FZU-D) RID, ORCIDNumber of authors 4 Source Title Electronic materials. - : MDPI
Roč. 2, č. 1 (2021), s. 17-23Number of pages 7 s. Language eng - English Country CH - Switzerland Keywords barium titanate ; piezoelectric ; ferroelectric Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA19-09671S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support FZU-D - RVO:68378271 DOI 10.3390/electronicmat2010002 Annotation 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 sub- strate. Accurate piezoelectric characterization was secured by using double beam interferomet- ric 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. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address http://hdl.handle.net/11104/0327436
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