Perovskite nanoparticles synthesised by reactive milling combined with thermal processing: preparation, morphology and structure characterisation
by Do Hung Manh, Tran Dang Thanh, Nguyen Xuan Phuc, Le Van Hong, Pham Thanh Phong, Luu Tien Hung
International Journal of Nanotechnology (IJNT), Vol. 8, No. 3/4/5, 2011

Abstract: Reactive milling and thermal processing methods were used to prepare a large variety of perovskites like ABO₃ and La₂NiO₄. The single-phase nanoparticle of ABO₃ was synthesised at different milling times in dependence on the starting oxides. The grain size of ABO₃ nanoparticles in the range of 10-30 nm was conditional upon milling time. Single-phase nanoparticles of La₂NiO₄ were obtained by using 6 h milling combined with annealing at 750°C. A structure conversion from a layer into a single perovskite of La₂NiO₄ was observed as milling time increased, whereas the crystalline structure of ABO₃ remained almost unchanged. Further analysis of HRTEM images confirms a core-shell structure of nanoparticles.

Online publication date: Fri, 21-Jan-2011

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