Journal
SCRIPTA MATERIALIA
Volume 179, Issue -, Pages 102-106Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2020.01.010
Keywords
BaTiO3; Superlattice; Laser deposition; Microstructure; Electrical properties
Categories
Funding
- Key Research and Development Plan of Liaoning Province [2017104002]
- Basic Scientific Research Projects of Colleges and Universities of Liaoning Province of China [LZGD2017005]
- major project of Industrial Technology Research Institute of Liaoning Colleges and Universities [201824010]
- National Basic Research Program of China [2017YFA0206302]
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BaTiO3/LaNiO3 (BTO/LNO) ferroelectric superlattices with different stacking periods have been prepared by pulsed laser deposition (PLD). Compared to the pure BTO films, the BTO/LNO superlattices have significantly enhanced ferroelectric and dielectric properties. This is because, in addition to the strain effect, the accumulated oxygen vacancies in each ultra-thin LNO layer can change the depolarization field and reduce the leakage current in the superlattices. The results indicate that the use of ultra-thin metallic oxide layers as the constituent material of the ferroelectric superlattices is a feasible and effective way to improve the properties of superlattices. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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