نتایج جستجو برای: batio3 nanoparticles
تعداد نتایج: 108756 فیلتر نتایج به سال:
A key obstacle to the development of high-capacity three-dimensional information mass storage systems using photorefractive crystals is that readout of holograms stored in the conventional manner is destructive. Thus hologram fixing in these materials is important if practical systems are to be built. High-temperature (801200C) photorefractive grating writing results for a variety of pure and d...
Piezocatalysis has gradually come into the limelight due to its great potential for solving energy shortages and environmental pollution problems. However, limited piezocatalytic efficiency is a severe bottleneck practical applications. Here, well-defined BaTiO3 nanosheets with highly exposed {001} polar facets are successfully synthesized enhance activity. The [001] piezoelectric polarization ...
When synthesized under certain conditions, barium titanate (BaTiO3, BTO) nanoparticles are found to have the non-thermodynamic cubic structure at room temperature. These particles also a several-fold enhanced dielectric constant, sometimes exceeding 6000, and widely used in thin-layer capacitors. A hydrothermal approach is synthesize BTO nanocrystals, which characterized by range of methods, in...
We present a study of the control electric field induced strain on magnetic and electrical transport properties in magneto-elastically coupled artificial multiferroic Fe3O4/BaTiO3 heterostructure. In this heterostructure, Fe3O4 thin film is epitaxially grown form bilateral domains, analogous to a-c stripe domains underlying BaTiO3(001) substrate. By in-situ dependent magnetization measurements,...
One of the most desirable attributes non-volatile memories and memristors is a fast non-destructive read out their resistive state. Prototypical ferroelectric (FE) use bulk photovoltaic response associated to polarization FE films address this requirement by optically sensing binary memory cells. A more advanced type tunnel junctions (FTJs). They feature state ratios RHigh/RLow up 106, with con...
We report on the coupling between ferroelectric and magnetic order parameters in a nanostructured BaTiO3-CoFe2O4 ferroelectromagnet. This facilitates the interconversion of energies stored in electric and magnetic fields and plays an important role in many devices, including transducers, field sensors, etc. Such nanostructures were deposited on single-crystal SrTiO3 (001) substrates by pulsed l...
A maximal product of stiffness and viscoelastic damping (E tan d), a figure of merit for damping layers, is desirable for structural damping applications. Particulate-reinforced metal–matrix composites were prepared by ultrasonic agitation of the melt and composed of the zinc–aluminum (ZnAl) alloy Zn80Al20 (in wt%) as the lossy matrix and SiC or BaTiO3 as the particulate reinforcements. ZnAl–Si...
We present a systematic evaluation of the effects of polarization switchability on surface structure and stoichiometry in BaTiO3 and PbTiO3 ferroelectric oxides. We show that charge passivation, mostly by ionic surface reconstructions, is the driving force for the stability of the surfaces, which suggests that varying the substrate polarization offers a new mechanism for controlling surface rec...
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