Simple top-down preparation of magnetic Bi0.9Gd0.1Fe1−xTixO3 nanoparticles by ultrasonication of multiferroic bulk material

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 Bi 0.9 Gd 0.1 Fe 1− x Ti x O 3 ( x = 0.00-0.20), were prepared initially by a solid state reaction tec...

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Bibliographic Details
Published in:Nanoscale 2014-11, Vol.6 (23), p.14336-14342
Main Authors: Basith, M. A, Ngo, D.-T, Quader, A, Rahman, M. A, Sinha, B. L, Ahmmad, Bashir, Hirose, Fumihiko, Mølhave, K
Format: Article
Language:English
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Summary: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 Bi 0.9 Gd 0.1 Fe 1− x Ti x O 3 ( 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 Bi 0.9 Gd 0.1 Fe 1− x Ti x O 3 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. The M-H hysteresis loops of the synthesized nanoparticles exhibit a single-phase-like magnetization behaviour.
ISSN:2040-3364
2040-3372
DOI:10.1039/c4nr03150d