Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method
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 electr...
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my.um.eprints.140282015-09-02T02:33:02Z http://eprints.um.edu.my/14028/ Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method Lwin, N. Ahmad Fauzi, M.N. Sreekantan, S. Othman, R. T Technology (General) TJ Mechanical engineering and machinery 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. Elsevier 2015-03-15 Article PeerReviewed 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 http://www.sciencedirect.com/science/article/pii/S0921452615000022 doi: 10.1016/j.physb.2015.01.001 |
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T Technology (General) TJ Mechanical engineering and machinery Lwin, N. Ahmad Fauzi, M.N. Sreekantan, S. Othman, R. Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method |
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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. |
format |
Article |
author |
Lwin, N. Ahmad Fauzi, M.N. Sreekantan, S. Othman, R. |
author_facet |
Lwin, N. Ahmad Fauzi, M.N. Sreekantan, S. Othman, R. |
author_sort |
Lwin, N. |
title |
Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method |
title_short |
Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method |
title_full |
Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method |
title_fullStr |
Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method |
title_full_unstemmed |
Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method |
title_sort |
physical and electromagnetic properties of nanosized gd substituted mg–mn ferrites by solution combustion method |
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Elsevier |
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2015 |
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http://eprints.um.edu.my/14028/ http://www.sciencedirect.com/science/article/pii/S0921452615000022 |
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1643689715796279296 |
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13.18916 |