• Maricic, Aleksa
• Ristanovic, Z.
• Kosanovic, D.
• Kalezic-Glisovic, A.
• Mitrovic, N.
• Djukic, S.

Abstract

<jats:p>Powder mixture of 50 mass % of barium titanate (BaTiO3) and 50 mass % of iron(Fe) was prepared by solid-state reaction technique, i.e. ball milled in airfor 60 min, 80 min, 100 min, 120 min and 150 min. During mechanochemicalactivation it was observed the iron powder transitsion to iron oxides.Depending on the activation time the content of iron oxides FeO, Fe2O3 andFe3O4 varies. Simultaneously, with the content change of the activatedsystem, magnetic properties change as well. The XRD analysis of milledsamples shown that as the activation time increase, the iron oxide percentageincreases to, whereby the percentage of BaTiO3 in a total sample massdecreases. The percentage of iron oxides and BaTiO3 in annealed sampleschanges depending on annealing temperature. The thermomagnetic measurementsperformed by Faraday method shown that the powder mixture milled for 100minutes exhibit maximum magnetization prior to annealing. The increase ofmagnetization maximum was observed after annealing at 540?C with all milledsamples, and at room temperature it has enhancement from 10 % to 22 %depending on the activation time. The samples milled for 100 min and 150 minand then sintered at 1200w?C exhibit magnetoelectric properties.</jats:p>

Topics

• x-ray diffraction
• iron
• annealing
• activation
• magnetization
• Barium
• iron powder