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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Synthesis, structural, magnetic and optical properties of nanocrystalline ZnFe
2
O
4
Physica B: Condensed Matter, Volume 406, No. 10, Year 2011
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Description
Nanocrystalline zinc ferrite (ZnFe2O4) is synthesized by high-energy ball-milling after 12 h from a powders mixture of zinc oxide (ZnO) and hematite (α-Fe2O3) with balls to powders mass ratio of 20:1. X-ray diffraction, vibrating sample magnetometer (VSM), the Mössbauer spectrometry and photoluminescence (PL) are used to characterize the samples. Rietveld analysis and VSM measurements show that the powder has an average crystallites size of 10 nm and a ferrimagnetic behavior with a saturation magnetization of 30 emu/g. After annealing at 700 °C, the lattice parameter reduces from 8.448 to 8.427 Å and the sample transforms into a superparamagnetic behavior, which was confirmed as well by the room temperature Mössbauer spectrometry. Different mechanisms to explain the obtained results and the correlation between magnetism and structure are discussed. Finally, the broadband visible emission band is observed in the entire PL spectrum and the estimated energy band gap is about 2.13 eV. © 2011 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Lemine, O. M.
Saudi Arabia, Riyadh
Al-imam Muhammad Ibn Saud Islamic University
United Kingdom, Nottingham
University of Nottingham
Bououdina, Mohamed
Bahrain, Zallaq
University of Bahrain
Sajieddine, Mohammed
Morocco, Beni Mellal
Université Sultan Moulay Slimane
Al-Saie, Ahmed M.
Bahrain, Zallaq
University of Bahrain
Morocco, Beni Mellal
Université Sultan Moulay Slimane
Shafi, Muhammad
United Kingdom, Nottingham
University of Nottingham
Khatab, Almontaser F.A.
United Kingdom, Nottingham
University of Nottingham
Egypt, Giza
National Institute of Laser Enhanced Sciences
Al-Hilali, M.
Saudi Arabia, Riyadh
Al-imam Muhammad Ibn Saud Islamic University
Henini, Mohamed
United Kingdom, Nottingham
University of Nottingham
Statistics
Citations: 88
Authors: 8
Affiliations: 5
Identifiers
Doi:
10.1016/j.physb.2011.02.072
ISSN:
09214526
Research Areas
Environmental
Study Approach
Qualitative