An Sr doping 0.65(Bi0.5Na0.5) TiO3-0.35 (Sr0.7+x + Bi0.2) TiO3 ceramic with tunable crystal structures and energy storage performances

(Ba, Sr)TiO3 for Multi-Gigabit DRAM

Investigation of a new lead-free Bi0.5(Na0.40K0.10)TiO3-(Ba0.7Sr0.3)TiO3 piezoelectric ceramic

Lead-free piezoelectric compositions of the (1-x)Bi0.5(Na0.40K0.10)TiO3-x(Ba0.7Sr0.3)TiO3 system (when x = 0, 0.05, 0.10, 0.15, and 0.20) were fabricated using a solid-state mixed oxide method and sintered between 1,050°C and 1,175°C for 2 h. The effect of (Ba0.7Sr0.3)TiO3 [BST] content on phase, microstructure, and electrical properties was investigated. The optimum sintering temperature was 1...

Heterostructured Ceramic Powders for Photocatalytic Hydrogen Production: Nanostructured TiO2 Shells Surrounding Microcrystalline (Ba,Sr)TiO3 Cores

Heterostructured photocatalysts were prepared to have nanostructured (ns) TiO2 shells surrounding microcrystalline (mc) cores of (Ba,Sr)TiO3. The as-prepared heterostructures were annealed between 400°C and 600°C to improve crystallinity and core-shell interfacial bonding. X-ray diffraction, electron microscopy, and gas adsorption measurements demonstrated that 50 nm thick shells composed of na...

Dielectric relaxation and pinning phenomenon of (Sr,Pb)TiO3 ceramics for dielectric tunable device application

The behavior of ferroelectric domain under applied electric field is very sensitive to point defects, which can lead to high temperature dielectric relaxation behaviors. In this work, the phases, dielectric properties and ferroelectric switching behavior of strontium lead titanate ceramics were investigated. The structural characterization is confirmed by X-ray diffraction. The high dielectric ...

Dielectric–electrode interactions in glass and silicon-compatible thin-film (Ba,Sr)TiO3 capacitors

This paper investigates the role of electrode– dielectric interactions, and barrier materials on leakage current, breakdown voltage, yield and reliability of thinfilm (Ba,Sr)TiO3 capacitors on silicon and glass substrates. The first part of the paper investigates the electrode–dielectric interactions with sputtered Cu and Ni electrodes to identify the mechanisms that lead to high leakage curren...