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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 increasingAl3+ 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 ferriteMgFe2O4 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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