Journal ArticleDOI
Dielectric properties of epitaxial BaTiO3 thin films
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In this paper, the dielectric response of epitaxial BaTiO3 thin films was measured through surface electrodes as a function of applied bias, frequency, and temperature, and the room temperature value was ∼500 with a dissipation factor, tan(δ).Abstract:
The dielectric response of epitaxial BaTiO3 thin films deposited on MgO was measured through surface electrodes as a function of applied bias, frequency, and temperature. The room temperature value of the dielectric constant was ∼500 with a dissipation factor, tan(δ), of 0.05 at 100 kHz. Measurements varying the bias field showed hysteresis of the dielectric response and a tunability of 30% for a maximum applied field of ∼7 MV/m. The frequency response of the dielectric constant is well described by a Curie–von Schweidler power law with an exponent ∼0.04 in the range 1 kHz–13 MHz. The films undergo a diffuse phase transition at temperatures higher than the bulk Curie temperature. The behavior of the dielectric response is attributed to the presence of residual strain in the epitaxial thin films.read more
Citations
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Improvement in electrical characteristics of graded manganese doped barium strontium titanate thin films
TL;DR: In this paper, the authors have demonstrated that the graded acceptor doping is a promising technique to reduce the temperature coefficient of capacitance (TCC), loss tangent, and leakage current of BST thin films.
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Roles of Ba/Ti Ratios in the Dielectric Properties of BaTiO3 Ceramics
TL;DR: In this article, the effect of the Ba/Ti ratio on microstructure, dielectric/ferroelectric properties, and domain width was studied using optical microscopy, ǫ(T) curves, D-E hysteresis, and transmission electron microscopy.
Journal ArticleDOI
Imaging of microwave permittivity, tunability, and damage recovery in (Ba, Sr)TiO3 thin films
D. E. Steinhauer,C. P. Vlahacos,F. C. Wellstood,Steven M. Anlage,C. Canedy,R. Ramesh,Andrei Stanishevsky,J. Melngailis +7 more
TL;DR: In this paper, the authors used a near-field scanning microwave microscope to quantitatively image the dielectric permittivity and tunability of thin-film Dielectric samples on a length scale of 1 μm.
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A BaTiO 3 -Based Electro-Optic Pockels Modulator Monolithically Integrated on an Advanced Silicon Photonics Platform
Felix Eltes,Christian Mai,Daniele Caimi,Marcel Kroh,Youri Popoff,Georg Winzer,Despoina Petousi,Stefan Lischke,J. Elliott Ortmann,Lukas Czornomaz,Lars Zimmermann,Jean Fompeyrine,Stefan Abel +12 more
TL;DR: In this article, the authors demonstrate monolithic integration of electro-optic modulators based on the Pockels effect in barium titanate (BTO) thin films into the back-end of a photonic integrated circuit (PIC) platform.
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Green upconversion luminescence in Er3+:BaTiO3 films
TL;DR: In this paper, green upconversion emissions at 548 and 528 nm have been obtained from sol-gel derived nanocrystalline Er3+:BaTiO3 films under 980 nm excitation.
References
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