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Synthesis and characterization of nanocrystalline MgAlxFe2−xO4 ferrites

Published online by Cambridge University Press:  28 September 2012

Hesham Mohamed Zaki  and
Saleh Al-Heniti
Hesham Mohamed Zaki*
Affiliation:
Department of Physics, Faculty of Science, Zagazig University, 44519, Zagazig, Egypt; and Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
Saleh Al-Heniti
Affiliation:
Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia
*
a)Address all correspondence to this author. e-mail: dakdik2001@yahoo.com, hesham_zaki@zu.edu.eg
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Abstract

The structural and magnetic properties of the Al cosubstituted cubic spinel ferrite series MgAlxFe2−xO4 (x = 0.0, 0.4, 0.8, and 1.0) synthesized through a coprecipitation method were characterized by means of x-ray powder diffraction, infrared (IR) spectroscopy, transmission electron microscopy (TEM), differential thermal analyses, and vibrating sample magnetometer. Lattice constants determined from x-ray diffraction (XRD) measurements exhibit a decrease with increasing Al3+ ions in the ferrites system. The particle size using TEM was ∼33 nm for magnesium ferrite, which is in good agreement with values obtained by XRD method. The crystallization spinel formation for the parent ferrite MgFe2O4 using differential thermal analysis (DTA) technique was 454 °C. The two main bands observed in the IR spectra (tetrahedral and octahedral) were in the range (568–628 cm−1) and (431–460 cm−1), respectively. Magnetization curve shows the highest value for the sample with concentration x = 0.4.

Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 21 , 14 November 2012 , pp. 2798 - 2805
Copyright
Copyright © Materials Research Society 2012

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