Epitaxial Bi5Ti3FeO15 thin films on Nb-doped SrTiO3 substrates |
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| Authors: | Yoon Hyung Keum Jong Yeog Son |
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| Affiliation: | Department of Applied Physics, Institute of Natural Sciences, and Integrated Education Institute for Frontier Science & Technology, Kyung Hee University, Yongin, Republic of Korea |
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| Abstract: | 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. |
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| Keywords: | Bi5Ti3FeO15 thin film crystals/crystallization multiferroic piezoelectric materials/properties |
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