TY - JOUR
T1 - Theoretical estimation of the linear electro-optic effect in compressively strained c-domain (Ba, Sr)TiO3 thin films using a phenomenological thermodynamic model
AU - Kondo, Shinya
AU - Yamada, Tomoaki
AU - Tagantsev, Alexander
AU - Setter, Nava
AU - Yoshino, Masahito
AU - Nagasaki, Takanori
N1 - Funding Information:
Acknowledgments This work was partly supported by the Concert-Japan Project “FF-Photon” from the Japan Science and Technology Agency.
Publisher Copyright:
© 2019 The Ceramic Society of Japan. All rights reserved
PY - 2019/6
Y1 - 2019/6
N2 - The influence of compressive strain on the linear electro-optic (EO) effect in c-domain (BaxSr1 1 x)TiO3 (BST) thin films was theoretically investigated using a phenomenological thermodynamic model. We considered that the c-domain BST thin films were grown on cubic substrates and an electric field was applied parallel to the direction of spontaneous polarization. To estimate the EO coefficients, we considered not only the intrinsic EO effect but also the elasto-optic effect by converse piezoelectric response. We found that the EO response is mostly determined by the difference in temperature from the ferroelectric-to-paraelectric phase transition boundary modified by the strain, and the elasto-optic effect appreciably affects the overall EO coefficient when the intrinsic EO effect is weak.
AB - The influence of compressive strain on the linear electro-optic (EO) effect in c-domain (BaxSr1 1 x)TiO3 (BST) thin films was theoretically investigated using a phenomenological thermodynamic model. We considered that the c-domain BST thin films were grown on cubic substrates and an electric field was applied parallel to the direction of spontaneous polarization. To estimate the EO coefficients, we considered not only the intrinsic EO effect but also the elasto-optic effect by converse piezoelectric response. We found that the EO response is mostly determined by the difference in temperature from the ferroelectric-to-paraelectric phase transition boundary modified by the strain, and the elasto-optic effect appreciably affects the overall EO coefficient when the intrinsic EO effect is weak.
KW - Barium strontium titanate
KW - Electro-optic effect
KW - Ferroelectric thin film
KW - Misfit strain
KW - Thermodynamic theory
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U2 - 10.2109/jcersj2.19011
DO - 10.2109/jcersj2.19011
M3 - Article
AN - SCOPUS:85067348742
SN - 1882-0743
VL - 127
SP - 348
EP - 352
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
IS - 6
ER -