Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method

Lwin, N. and Ahmad Fauzi, M.N. and Sreekantan, S. and Othman, R. (2015) Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method. Physica B: Condensed Matter, 461. pp. 134-139. ISSN 0921-4526

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Abstract

Nanosized powders of Gd substituted Mg-Mn ferrites synthesized by solution combustion method using high purity metal nitrates are presented. These powders were calcined, compacted and sintered at 1250 degrees C. The powders were characterized by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM). The effect of Gd substitution on phase formation, microstructure and bulk density was also studied. Gd2O3 facilitates the formation of a secondary phase on the grain boundary which suppresses abnormal grain growth. The bulk density was found to decrease from 426 to 3.38 g/cm(3) with an increase of Gd substitution, but the electrical resistivity was increased. Ferrite with a low dielectric constant in the range of 6-12 was observed and there was no maximum dielectric loss in the frequency range measured to 1 GHz. A decrease in saturation magnetization was also observed by a small fraction of Gd substitution. Correlation between magnetic properties and physical properties were discussed. (C) 2015 Elsevier B.V. All rights reserved.

Item Type: Article
Additional Information: ISI Document Delivery No.: CD1CD Times Cited: 0 Cited Reference Count: 15 Cited References: Al Hilli MF, 2011, MATER CHEM PHYS, V128, P127, DOI 10.1016/j.matchemphys.2011.02.064 BROCKMAN FG, 1971, J AM CERAM SOC, V54, P183, DOI 10.1111/j.1151-2916.1971.tb12259.x Burke J. E., 1958, CERAMIC FABRICATION, P28 Chand J, 2009, J ALLOY COMPD, V486, P376, DOI 10.1016/j.jallcom.2009.06.150 Jacobo SE, 2004, J MAGN MAGN MATER, V272, P2253, DOI 10.1016/j.jmmm.2003.12.564 Khan MA, 2011, CERAM INT, V37, P2519, DOI 10.1016/j.ceramint.2011.03.063 Kunal B. M., 2012, J ADV MICROSC RES, V7, P40 Li X, 2009, J MAGN MAGN MATER, V321, P1276, DOI 10.1016/j.jmmm.2008.11.006 Naeem M, 2009, J ALLOY COMPD, V487, P739, DOI 10.1016/j.jallcom.2009.08.057 Rana MU, 1999, MATER LETT, V41, P52, DOI 10.1016/S0167-577X(99)00102-0 REZLESCU N, 1994, J MAGN MAGN MATER, V136, P319, DOI 10.1016/0304-8853(94)00309-2 Romero S. U., 2010, J APPL PHYS Sun JJ, 2002, J MAGN MAGN MATER, V250, P20, DOI 10.1016/S0304-8853(02)00403-1 Yang H, 2004, J MAGN MAGN MATER, V271, P230, DOI 10.1016/j.jmmm.2003.09.030 Zhao LJ, 2004, PHYS STATUS SOLIDI A, V201, P3121, DOI 10.1002/pssa.20040856 Lwin, Nilar Fauzi, Ahmad M. N. Sreekantan, Srimala Othman, Radzali Universiti Sains Malaysia; "e-Science Fund" 6013343; MOSTI 03-01-05-SF 0375 The authors are grateful to the Universiti Sains Malaysia for providing financial assistance under USM fellowship scheme to conduct this research. The authors also would like to acknowledge the "e-Science Fund" (Grant no. 6013343) and MOSTI (03-01-05-SF 0375) for financial support. 0 ELSEVIER SCIENCE BV AMSTERDAM PHYSICA B
Uncontrolled Keywords: Ferrite; Solution combustion; Microstructure; Rare earths; Density/electromagnetic properties
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 02 Sep 2015 02:33
Last Modified: 02 Sep 2015 02:33
URI: http://eprints.um.edu.my/id/eprint/14028

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