Microwaves dielectric properties of Y3Fe5O12-CaCu3Ti4O12 composites

Author

Sabóia, K. D A ; Girão, H.T. ; Sombra, A.S.B. ; Graça, M. P F ; Costa, L.C. ; Amaral, F. ; Valente, M.A.

Author_Institution

Dept. de Fis., Univ. Fed. do, Brazil

fYear

2011

fDate

Oct. 29 2011-Nov. 1 2011

Firstpage

537

Lastpage

540

Abstract

A study of the effect of the presence of Y₃Fe₅O₁₂ (YIG) in the dielectric properties of the CaCu₃Ti₄O₁₂ (CCTO) is presented. The samples were prepared by the solid state method. Mechanical alloying followed by the solid state procedure had been successfully used to produce powders of CCTO and YIG to be used in the composites. We also look at the effect of the grain size of the YIG and CCTO in the final properties of the composite. The samples were analyzed using X-Ray diffraction and scanning electron microscopy (SEM). Dielectric permittivity had been measured at 2.7 and 5.0 GHz, using the small perturbation theory.

Keywords

X-ray diffraction; calcium alloys; composite materials; copper alloys; iron alloys; permittivity; perturbation theory; scanning electron microscopy; titanium alloys; yttrium alloys; SEM; XRD; Y₃Fe₅O₁₂-CaCu₃Ti₄O₁₂; composites; dielectric permittivity; frequency 2.7 GHz; frequency 5 GHz; grain size; mechanical alloying; microwaves dielectric properties; powders; scanning electron microscopy; small perturbation theory; solid state method; x-ray diffraction; Cavity resonators; Dielectric constant; Materials; Microwave devices; Permittivity; CaCu3Ti4O12; Composite; Y3Fe5O12; dielectric properties; microwave;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave & Optoelectronics Conference (IMOC), 2011 SBMO/IEEE MTT-S International

Conference_Location

Natal

ISSN

Pending

Print_ISBN

978-1-4577-1662-1

Type

conf

DOI

10.1109/IMOC.2011.6169310

Filename

6169310