Quality factor variation with top electrode area in thin-film barium–strontium–titanate parallel-plate capacitors is discussed. At low frequencies, the geometry dependence is consistent with the presence of a parallel parasitic loss pathway enabled by conduction over the device mesa surface. At high frequencies, the variation in the quality factor with top electrode area is due to a geometry-in...

In this work, pellet samples of barium calcium zirconate titanate (Ba1-xCaxZr0.1Ti0.9O3, x=0.065) were prepared using solid state reaction route with double sintering. The structural and piezoelectric properties measured. Further, SEM EDAX analysis observed. With different sintering temperature, the density grain size changed further, their effect in has been For samples, converse constant (d33...

We have measured the low-frequency ("unclamped") electrooptic and piezoelectric coefficients in undoped BaTiO, and SrSa, -Nh2O6 (x = 0.61) crystals using interferometric techniques. The Contribution of the piezoelectric effect to the Pockels measurements is discussed. For an applied ac electric field in the range 0.1-200 V/cm, the electrooptic and piezoelectric effects are linear in the magnitu...

Flexoelectric hydrophones offer the possibility of reasonable sensitivity in lead-free systems. In this work, a dense barium strontium titanate ceramic with Ba:Sr ratio 70:30 and an effective flexoelectric coefficient, μ ~12, 105.6 ± 0.6 μC/m at room temperature was utilized prototype three-point bending hydrophone dimensions 77 × 10 0.67 mm3. Tap testing calibrated acoustic hammer showed reson...

We report the solution-based synthesis of single-crystalline nanorods composed of barium titanate (BaTiO3) and strontium titanate (SrTiO3), which yields well-isolated nanorods with diameters ranging from 5 to 60 nm and lengths reaching up to >10 mum. Electron microscopy and diffraction measurements show that these nanorods are composed of single-crystalline cubic perovskite BaTiO3 and SrTiO3 wi...

The ability of photorefractive crystals such as barium titanate and strontium barium niobate to record spatially phase shifted real time holograms with high diffraction efficiency is the basis of many new optical devices involving coherent amplification. Some examples are unidirectional ring resonators, passive phase conjugate mirrors and coherent image amplifiers. 1 While in the past, most att...