NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2014, 5 (6), P. 854-860
NANOCRYSTALLINE PEROVSKITE-LIKE OXIDES FORMATION IN Ln2O3 – Fe2O3 – H2O (Ln = La, Gd) SYSTEMS
E. A. Tugova – Ioffe Physical Technical Institute of RAS, Saint Petersburg, Russia; firstname.lastname@example.org
O. N. Karpov – Ioffe Physical Technical Institute of RAS, Saint Petersburg, Russia
Nanocrystalline LnFeO3 (Ln = La, Gd) ferrites have been prepared by the co-precipitation method followed by heat treatment in air. The formation mechanisms for LaFeO3 and GdFeO3 in Ln2O3 – Fe2O3 – H2O (Ln = La, Gd) systems under the mentioned conditions are investigated. The phase interaction scheme, reflecting ways which lead to the target, synthesis product yield, as well as the common tendency of LaFeO3 and GdFeO3 formation mechanisms, are constructed. The mean sizes of coherent scattering regions of LaFeO3 and GdFeO3 were determined to be 30±3 and 40±4 nm, respectively.
Keywords: LnFeO3, ferrites, nanostructures, precipitation technique, phase formation, X-Ray diraction.
PACS 61.46.-w; 82.80.Ej