Preparation and Characterization of Nano Ferrites

• Authors: Z. Lazarević , Č. Jovalekić , A. Milutinović , M. Romčević , N. Romčević
• Languages of publication: EN

Abstracts

EN

Nickel ferrite (NiFe_2O_4) and manganese ferrite (MnFe_2O_4) have been prepared by a soft mechanochemical route from mixture of (1) Ni(OH)_2 and α-Fe_2O_3 and (2) Mn(OH)_2 and α-Fe_2O_3 powders in a planetary ball mill. The mixture was activated for varying duration. Soft mechanochemical reaction leading to formation of the NiFe_2O_4 and MnFe_2O_4 spinel phases were followed by X-ray diffraction, Raman and infrared spectroscopy, scanning and transmission microscopy. The spinel phase formation was first observed after 4 h of milling (case 1) and after 3 h (case 2) and its formation was completed after 25 h in both cases. The synthesized NiFe_2O_4 and MnFe_2O_4 ferrites have a nanocrystalline structure with a crystallite size of about 30 and 40 nm for cases (1) and (2), respectively. There are five Raman and four IR active modes. In order to understand better the whole process of phase formation, the Mössbauer measurements were done.

Keywords

EN

75.20.-g; 81.07.Wx; 81.20.Ev; 74.25.nd

Discipline

• 81.07.Wx: Nanopowders
• 75.20.-g: Diamagnetism, paramagnetism, and superparamagnetism
• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation
• 74.25.nd: Raman and optical spectroscopy

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 3
• Pages: 682-686

Dates

published

2012-03

received

2011-09-20

Contributors

author

Z. Lazarević

• Institute of Physics, University of Belgrade, Pregrevica 118, Belgrade, Serbia

author

Č. Jovalekić

• The Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia

author

A. Milutinović

• Institute of Physics, University of Belgrade, Pregrevica 118, Belgrade, Serbia

author

M. Romčević

• Institute of Physics, University of Belgrade, Pregrevica 118, Belgrade, Serbia

author

N. Romčević

• Institute of Physics, University of Belgrade, Pregrevica 118, Belgrade, Serbia

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Identifiers

DOI

10.12693/APhysPolA.121.682