2024-03-29T13:24:26Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00028960
2023-01-16T04:22:07Z
320:321:322
Large impact of strain on the electro-optic effect in (Ba, Sr)TiO3 thin films: Experiment and theoretical comparison
Kondo, Shinya
95122
Yamada, Tomoaki
95123
Tagantsev, Alexander K.
95124
Ma, Ping
95125
Leuthold, Juerg
95126
Martelli, Paolo
95127
Boffi, Pierpaolo
95128
Martinelli, Mario
95129
Yoshino, Masahito
95130
Nagasaki, Takanori
95131
(001)-epitaxial (Ba0.5Sr0.5)TiO3 (BST) thin films with different magnitudes of compressive strain were fabricated on SrRuO3/SrTiO3 substrates by pulsed laser deposition, and their electro-optic (EO) properties were characterized by modulation ellipsometry at different temperatures. All fabricated films showed an increased paraelectric-to-ferroelectric phase transition temperature upon compressive strain and revealed c-domain structures in the ferroelectric phase. We experimentally clarified that the EO properties of compressively strained BST thin films are enhanced toward the phase transition temperature modified by the strain. The experimental results were compared with the theoretical prediction based on a phenomenological thermodynamic model. Although the measured EO coefficient rc was less than that theoretically predicted, the experimentally observed strain effect on the EO properties is in good qualitative agreement.
ファイル公開:2020/08/26
journal article
AIP Publishing
2019-08-26
application/pdf
Applied Physics Letters
9
115
092901
0003-6951
https://nagoya.repo.nii.ac.jp/record/28960/files/1_5117218.pdf
eng
https://doi.org/10.1063/1.5117218
Copyright 2019 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.The following article appeared in (Applied Physics Letters. v.115, n.9, 2019, p.092901) and may be found at (http://dx.doi.org/10.1063/1.5117218).