نتایج جستجو برای: bismuth ferrite
تعداد نتایج: 13366 فیلتر نتایج به سال:
This study presents bismuth ferrite nanoparticle (BFO) modified carbon paste electrodes (BFO/CPEs) for the determination of lead and cadmium.
We use density functional theory to identify several previously unknown polar and nonpolar structures within the low-energy phase space of perovskite-structure bismuth ferrite, $\mathrm{Bi}\mathrm{Fe}{\mathrm{O}}_{3}$. Bismuth ferrite is one most widely studied multiferroic materials because its large ferroelectric polarization coexisting with magnetic order at room temperature. Of particular i...
Bismuth ferrite suffers from high leakage currents and the presence of a complex incommensurate spin cycloidal magnetic ordering, which has limited its commercial viability and has led researchers to investigate the functionality of doped BiFeO3 ceramics. In particular, the substitution of rare earths onto the Bi(3+) site of the perovskite lattice have been shown to lead to improved functional ...
A series of laser pump, x-ray probe experiments show that above band gap photoexcitation can generate a large out-of-plane strain in multiferroic BiFeO3 thin films. The strain decays in a time scale that is the same as the photo-induced carriers measured in an optical transient absorption spectroscopy experiment. We attribute the strain to the piezoelectric effect due to screening of the depola...
UNLABELLED Bismuth Ferrite (BFO) nanoparticles (BFO-NP) display interesting optical (nonlinear response) and magnetic properties which make them amenable for bio-oriented diagnostic applications as intra- and extra membrane contrast agents. Due to the relatively recent availability of this material in well dispersed nanometric form, its biocompatibility was not known to date. In this study, we ...
Multiferroic BiFeO${}_{3}$ has been surprising researchers with its properties for decades now, and questions related to the origin of polarization various mechanisms behind ferroelectric are still important. This study shows that in BiFeO${}_{3}$, quasipolaron surface is a nested domain structure. As more quasipolarons pinned at per unit area, density antiferromagnetically ordered spins increa...
Bismuth ferrite (BiFeO3) nanocomposites were synthesized using a novel nano-agitator bead milling method followed by calcination. oxide and iron nanoparticles mixed in stoichiometric ratio milled for 3 h calcined at 650 °C air. X-ray diffraction with Rietveld refinement, scanning electron microscopy, transmission microscopy techniques used to elucidate the structure of BiFeO3. The particle diam...
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