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Microstructure and magneto-dielectric properties of ferrimagnetic composite GdIG(X):YIG(1-X) at radio and microwave frequencies

, , , , , , , , and . JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 70 (5): 804-810 (2009)
DOI: 10.1016/j.jpcs.2009.03.009

Abstract

The gadolinium iron garnet (GdIG, Gd3Fe5O12) and yttrium iron garnet (YIG, Y3Fe5O12), and their GdIG(X):YIG(1-X) composites, were obtained by a new solid-state procedure. The microstructure of the samples was studied by X-ray powder diffraction and Rietveld refinement, Vickers microhardness and scanning electron microscopy. The density and microhardness behavior were studied as a function of the lattice parameters for the composite samples. In the present work, the magnetic and dielectric properties of the GdlG(X):YIG(1-X) composite at radio and microwave frequencies were also studied. The magnetic permeability and dielectric permittivity and loss properties for the composite GdIG(X):YIG(1-X) showed good potential for use in components, when one is looking for moderate epsilon(r)' and mu(r)' materials with low loss in the radio-frequency and microwave range. (C) 2009 Elsevier Ltd. All rights reserved.

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