Composition and phase analysis of nanocrystalline BaxSr1-xFe12O19 (x = 1.0; 0.6; and 0.4) by using general structure analysis system

Abstract

Single phase of nanocrystalline BaxSr1-xFe12O19 (x = 1.0; 0.6; and 0.4) was successfully synthesized by mechanical milling method and thermal process. Stoichiometric quantities of analytical-grade SrCO3, BaCO3, and Fe2O3, were mixed and milled using a high-energy milling. The mixture of all precursors was sintered at a temperature of 1000 °C for 10 hours. The refinement of x-ray diffraction trace for all samples confirmed a single phase material with a hexagonal structure. The increase of the amount of strontium content in the barium atoms in the BaxSr1-xFe12O19 system can decrease the lattice parameter which have been successfully substituted into the barium atoms. The calculation result of cationic distribution showed that the BaxSr1-xFe12O19 (x = 0.6) and (x = 0.4) samples have nominal composition of Ba0,61Sr0,39Fe12O19 and Ba0,37Sr0,63Fe12O19, respectively. Results of the mean of crystallite size evaluation for respective powder materials showed that the BaxSr1-xFe12O19 (x = 1.0; 0.6; and 0.4) samples have the crystallite size of 22nm, 25nm and 34nm, respectively. We concluded that the cationic distribution of barium atoms was successfully substituted by strontium atoms approaching the nominal stoichiometric composition.