Epitaxial Bi5Ti3FeO15 thin films on Nb‐doped SrTiO3 substrates

We investigated the ferroelectric switching dynamics as well as the multiferroic and piezoelectric properties of highly a‐oriented epitaxial Bi5Ti3FeO15 (BTFO) thin films on Nb‐doped SrTiO3 single crystal substrates. The BTFO thin films favored highly a‐oriented crystallinity because c‐oriented crys...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2023-11, Vol.106 (11), p.6849-6857
Main Authors: Yoon Hyung Keum, Son, Jong Yeog
Format: Article
Language:English
Subjects:
Crystallinity
Deposition
Epitaxy
Ferroelectric materials
Ferroelectricity
Ferromagnetic materials
Piezoelectricity
Single crystals
Strontium titanates
Substrates
Thin films
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Summary:We investigated the ferroelectric switching dynamics as well as the multiferroic and piezoelectric properties of highly a‐oriented epitaxial Bi5Ti3FeO15 (BTFO) thin films on Nb‐doped SrTiO3 single crystal substrates. The BTFO thin films favored highly a‐oriented crystallinity because c‐oriented crystallinity decreased under deposition conditions in which substrate temperature and thin film deposition rate were simultaneously lowered. The highly a‐oriented epitaxial BTFO thin films showed the best ferroelectric properties, whereas the highly c‐oriented epitaxial BTFO thin films showed the best ferromagnetic properties. In particular, the BTFO thin films in which a‐ and c‐oriented crystallinity were properly mixed showed the best piezoelectric properties.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.19326