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Title

Tailoring Lattice Strain and Ferroelectric Polarization of Epitaxial BaTiO3 Thin Films on Si(001)

AuthorsLyu, Jike; Fina, Ignasi ; Solanas, Raul ; Fontcuberta, Josep ; Sánchez Barrera, Florencio
KeywordsFerroelectrics and multiferroics
Synthesis and processing
Issue Date11-Jan-2018
PublisherNature Publishing Group
CitationScientific Reports 8: 495 (2018)
AbstractFerroelectric BaTiO3 films with large polarization have been integrated with Si(001) by pulsed laser deposition. High quality c-oriented epitaxial films are obtained in a substrate temperature range of about 300 °C wide. The deposition temperature critically affects the growth kinetics and thermodynamics balance, resulting on a high impact in the strain of the BaTiO3 polar axis, which can exceed 2% in films thicker than 100 nm. The ferroelectric polarization scales with the strain and therefore deposition temperature can be used as an efficient tool to tailor ferroelectric polarization. The developed strategy overcomes the main limitations of the conventional strain engineering methodologies based on substrate selection: it can be applied to films on specific substrates including Si(001) and perovskites, and it is not restricted to ultrathin films.
Publisher version (URL)http://dx.doi.org/10.1038/s41598-017-18842-5
URIhttp://hdl.handle.net/10261/159803
ISSN2045-2322
Appears in Collections:(ICMAB) Artículos
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