PREPARATION OF DISSIMILARLY STRUCTURED FERRITE COMPOUNDS BY SOL-GEL AUTO-COMBUSTION METHOD

Authors

  • A. Shutka RTU Institute of Silicate Materials
  • G. Mezinskis
  • A. Pludons

Abstract

Ferrites with the spinel-type NiFe2O4 (NiF), CoFe2O4 (CoF) and hexagonal BaFe12O19 (BaM) structure were obtained using the auto-combusting reaction method. After the temperature-initiated auto-combusting reaction, different oxide mixtures were obtained. In the next step by calcination at 800 °C for BaM and CoF and at 1000 °C for NiF, corresponding ferrite compounds of a high level of purity were obtained. Auto-combustion reaction temperature was determined by thermogravimetry (TG) analysis. The obtained substances (crystalline phases) and their crystallite size were investigated by X-ray diffraction (XRD) analysis. Powder-forming particle sizes were characterized by atomic force microscopy (AFM) and by scanning electron microscopy (SEM). AFM images revealed particles of nanometer dimensions under 50 nm.

Author Biographies

A. Shutka, RTU Institute of Silicate Materials

G. Mezinskis

A. Pludons

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Published

2010-03-16

Issue

Section

TECHNOLOGY OF INORGANIC MATERIALS