Simple top-down preparation of magnetic Bi₀.₉Gd₀.₁Fe₁-xTixO₃ nanoparticles by ultrasonication of multiferroic bulk material.
Other Scholarly Work
Basith, MA, Ngo, D-T, Quader, A et al. (2014). Simple top-down preparation of magnetic Bi₀.₉Gd₀.₁Fe₁-xTixO₃ nanoparticles by ultrasonication of multiferroic bulk material.
. NANOSCALE, 6(23), 14336-14342. 10.1039/c4nr03150d
Basith, MA, Ngo, D-T, Quader, A et al. (2014). Simple top-down preparation of magnetic Bi₀.₉Gd₀.₁Fe₁-xTixO₃ nanoparticles by ultrasonication of multiferroic bulk material.
. NANOSCALE, 6(23), 14336-14342. 10.1039/c4nr03150d
We present a simple technique to synthesize ultrafine nanoparticles directly from bulk multiferroic perovskite powder. The starting materials, which were ceramic pellets of the nominal compositions Bi₀.₉Gd₀.₁Fe₁-xTixO₃ (x = 0.00-0.20), were prepared initially by a solid state reaction technique, then ground into micrometer-sized powders and mixed with isopropanol or water in an ultrasonic bath. The particle size was studied as a function of sonication time with transmission electron microscopic imaging and electron diffraction that confirmed the formation of a large fraction of single-crystalline nanoparticles with a mean size of 11-13 nm. A significant improvement in the magnetic behavior of Bi₀.₉Gd₀.₁Fe₁-xTixO₃ nanoparticles compared to their bulk counterparts was observed at room temperature. This sonication technique may be considered as a simple and promising route to prepare ultrafine nanoparticles for functional applications.
