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Electrical properties and Pockels effect in BaTiO $$_{3}$$ /SrTiO $$_{3}$$ superlattices

Content Provider	Springer Nature Link
Author	Chaib, Hassan Khalal, Ali El Frikhe, Es Said Nafidi, Abdelhakim Charifi, Hicham Ait Taleb, Thami Tirbiyine, Ahmed
Copyright Year	2013
Abstract	The electrical and linear electro-optical properties of BaTiO $$_{3}$$ (BT)/SrTiO $$_{3}$$ (ST) superlattices epitaxially grown on ST substrate are theoretically investigated using a microscopic quantum mechanical model based on the orbital approximation in correlation with the dipole–dipole interaction. Both the first-, second-, and third-order electronic polarizabilities were considered in this calculation in order to obtain accurate results for both the spontaneous local electric field, spontaneous polarization, relative dielectric constant, and linear electro-optic coefficients (Pockels constants) of BT/ST superlattices. The calculations show that the spontaneous local electric field, spontaneous polarization and linear electro-optic coefficients of BT/ST superlattices increase with their content in BT while the relative dielectric constant increases with their content in ST. Moreover, we have shown that significant enhancement of the linear electro-optic coefficients can be achieved in BT/ST superlattices. This enhancement, which concerns the ST as well as the BT layers, arises from the combined effects of strain, induced in the BT layers by the epitaxial growth, and internal polarizing electric field originating in the BT layers and acting on the electronic clouds of the polarizable constituent ions of the system.
Starting Page	179
Ending Page	192
Page Count	14
File Format	PDF
ISSN	03068919
Journal	Optical and Quantum Electronics
Volume Number	46
Issue Number	1
e-ISSN	1572817X
Language	English
Publisher	Springer US
Publisher Date	2013-07-17
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	BaTiO $$_{3}$$ SrTiO $$_{3}$$ Superlattices Local electric field Dielectric constant Linear electro-optic coefficients Optics, Optoelectronics, Plasmonics and Optical Devices Electrical Engineering Characterization and Evaluation of Materials Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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