We carry out first-principles calculations for CaTiO3/BaTiO3superlattices with epitaxial strain corresponding to growth on a SrTiO3 substrate, and consider octahedral rotations as well as ferroelectric distortions. The calculations are done as a function of electric displacement field, and both a macroscopic and a local electrostatic analysis are carried out. We find that strong octahedral rota...

The structural response of a ferroelectric BaTiO3/dielectric CaTiO3 superlattice to the bipolar applied electric field was studied using time-resolved x-ray microdiffraction. Structural results were compared to the polarization-electric field hysteresis curve obtained from electrical measurements. The superlattice x-ray reflections were found to have a broad distribution of intensity in recipro...

The role of the effect support on reactivity heterogeneous catalysts cannot be over-emphasized. Therefore, study documented in this article investigated different metal oxide supports (MgO, CaO and TiO2) mixed (CaTiO3) performance a bimetallic NiMo catalyst prepared via sol–gel method during catalytic growth carbon nanotubes (CNTs) from waste polypropylene (PP). Waste PP was pyrolyzed at 700 °C...

The magnitude of ionic conductivity is known to depend upon both mobility and number available carriers. For proton conductors, hydration a key factor in determining the charge–carrier concentration ABO3 perovskite oxides. Despite high reported calcium titanate (CaTiO3), this has thus far been regarded as poor conductor due low capability. Here, enhanced defective Ca0.92TiO2.84(OH)0.16 prepared...