1. Microstructure and magneto-dielectric properties of ferrimagnetic composite GdIG X :YIG1− X at radio and microwave frequencies
- Author
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Fechine, P.B.A., Pereira, F.M.M., Santos, M.R.P., Filho, F.P., de Menezes, A.S., de Oliveira, R.S., Góes, J.C., Cardoso, L.P., and Sombra, A.S.B.
- Subjects
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MICROSTRUCTURE , *DIELECTRICS , *MICROWAVES , *COMPOSITE materials , *GARNET , *MAGNETIC permeability , *FERRIMAGNETISM , *RIETVELD refinement , *X-ray diffraction - Abstract
Abstract: The gadolinium iron garnet (GdIG, Gd3Fe5O12) and yttrium iron garnet (YIG, Y3Fe5O12), and their GdIG X :YIG1− 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 GdIG X :YIG1− X composite at radio and microwave frequencies were also studied. The magnetic permeability and dielectric permittivity and loss properties for the composite GdIG X :YIG1− X showed good potential for use in components, when one is looking for moderate ε r′ and μ r′ materials with low loss in the radio-frequency and microwave range. [Copyright &y& Elsevier]
- Published
- 2009
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