BaTiO3-CoFe2O4 composite films were prepared on (100) SrTiO3 substrates by using a radio-frequency magnetron co-sputtering method at 750 °C. These films contained highly (001)-oriented crystalline phases of perovskite BaTiO3 and spinel CoFe2O4, which can form a self-assembled nanostructure with BaTiO3 well-dispersed into CoFe2O4 under optimized sputtering conditions. A prominent dielectric perc...

Composite polymer/ceramic filaments for material extrusion-based fused filament fabrication additive manufacturing, using barium strontium titanium oxide (BST) ceramics and acrylonitrile butadiene styrene (ABS) thermoplastics were produced; their dielectric physical properties have been characterised the first time. The properties, relative permittivity (εr), quality factor (Q×f) loss (tanδ) me...

Atomic Layer Deposition of Platinum on Strontium Titanate Surfaces Tremendous energy savings and environmental benefits are possible from improved catalysts for chemical manufacturing and emissions reduction. Breakthroughs in catalyst development will be enabled by precise methods for synthesizing nanostructured materials. Atomic layer deposition (ALD) is a thin film growth technique that is cu...

Abstract In this study, we prepared a homogeneous fine powder of barium titanate (BaTiO 3 , BT) doped with different concentrations strontium (x = 0, 0.05, 0.125, 0.15, 0.20, and 0.3) having the composition Ba 1-x Sr x TiO (barium titanate, BSr T). XRD patterns Rietveld refinement revealed existence single tetragonal phase structure for BSrxT, 0–20%, cubic BSr30%T. The physical properties pure ...

We present the realization and analysis of microwave performances interdigited varactors integrating thin ferroelectric layers barium strontium titanate (BaxSr1?xTiO3). Devices based on films different compositions (x = 0.8 x 0.5) have been characterized in millimeter-wave domain, from 200 MHz to 110 GHz. By applying bias voltages, tunability capacitance can reach up 40% for Ba0.8Sr0.2TiO3 comp...