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Microstructure and magneto-dielectric properties of ferrimagnetic composite GdIGX:YIG1−X at radio and microwave frequencies |
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| Authors: | P.B.A. Fechine,F.M.M. Pereira,M.R.P. Santos,A.S. de Menezes,J.C. Gó es,A.S.B. Sombra |
| Affiliation: | a Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará—UFC, Campus do Pici, CP 12100, CEP 60451-970 Fortaleza—CE, Brazil b Departamento de Química Orgânica e Inorgânica—UFC, Brazil c Laboratório de Telecomunicações e Ciência e Engenharia de Materiais (LOCEM) Departamento de Física, Universidade Federal do Ceará—UFC, Brazil d Departamento de Engenharia Metalúrgica e de Materiais—UFC, Brazil e IFGW, Universidade Estadual de Campinas—UNICAMP, CP 6165, 13083-970 Campinas, SP, Brazil f Departamento de Física, Universidade Estadual do Ceará—UECE, Brazil |
| Abstract: | The gadolinium iron garnet (GdIG, Gd3Fe5O12) and yttrium iron garnet (YIG, Y3Fe5O12), and their GdIGX: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 GdIGX:YIG1−X composite at radio and microwave frequencies were also studied. The magnetic permeability and dielectric permittivity and loss properties for the composite GdIGX:YIG1−X showed good potential for use in components, when one is looking for moderate εr′ and μr′ materials with low loss in the radio-frequency and microwave range. |
| Keywords: | D. Magnetic properties D. Dielectric properties |
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