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Sol-gel synthesis of tetragonal BaTiO3 thin films under fast heating
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Liu, Yang, Li, Sirui, Gallucci, Fausto and Rebrov, Evgeny V. (2024) Sol-gel synthesis of tetragonal BaTiO3 thin films under fast heating. Applied Surface Science, 661 . 160086. doi:10.1016/j.apsusc.2024.160086 ISSN 0169-4332.
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Official URL: http://dx.doi.org/10.1016/j.apsusc.2024.160086
Abstract
BaTiO3 thin films with a thickness of 400 nm were prepared by spin coating onto a quartz plate and subsequently calcined at 700 °C. The effect of fast (540 K min−1) and slow (10 K min−1) heating on morphology, unit cell parameter and dielectric constant was studied. Fast heating yields tetragonal BaTiO3 films with a semiconductor band gap of 3.54 eV, dielectric constant of 685 and a surface roughness of 12 nm. In contrast, slow heating produces tetragonal BaTiO3 films with a larger band gap of 3.78 eV, a dielectric constant of 219 and a surface roughness of 35 nm. A kinetic constant of 0.0061 min−1 was obtained in the decomposition of methylene blue with UV light over BTO films at 20 °C.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Ceramic materials, Ferroelectric thin films, Barium titanate, Ferroelectric crystals, Ceramics -- Electric properties | ||||||||
Journal or Publication Title: | Applied Surface Science | ||||||||
Publisher: | Elsevier | ||||||||
ISSN: | 0169-4332 | ||||||||
Official Date: | 15 July 2024 | ||||||||
Dates: |
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Volume: | 661 | ||||||||
Article Number: | 160086 | ||||||||
DOI: | 10.1016/j.apsusc.2024.160086 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 15 April 2024 | ||||||||
Date of first compliant Open Access: | 16 April 2024 | ||||||||
RIOXX Funder/Project Grant: |
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