Title :
Dielectric tunability in (1−x)[Pb(Mg1/3Nb2/3)O3]−xPbTiO3 ceramics for tunable devices application
Author :
Guarany, C.A. ; Guerra, J.D.S. ; Araujo, E.B. ; Lima, E.C.
Author_Institution :
Grupo de Ferroeletricos e Mater. Multifuncionais, Univ. Fed. de Uberlandia, Uberlândia, Brazil
Abstract :
The dielectric properties of the 0.65[Pb(Mg1/3Nb2/3)O3]-0.35PbTiO3 ferroelectric ceramic composition were investigated viewing the capability to be used for tunable microwave applications. The dielectric response has been studied for three selected temperatures (300 K, 370 K and 400 K), below the paraelectric-ferroelectric phase transition temperature, as a function of the applied `bias´ electric field. The obtained dielectric tunability was found to be around 60%, under an electric field of 19 kV/cm, which makes the studied ceramic composition an excellent candidate for application in the electro-electronic industry, as tunable devices.
Keywords :
dielectric function; ferroelectric ceramics; ferroelectric transitions; high-frequency effects; lead compounds; permittivity; PMN-PbTiO3; ceramics; dielectric permittivity; dielectric tunability; ferroelectric ceramic composition; paraelectric-ferroelectric phase transition temperature; temperature 300 K to 400 K; tunable microwave applications; Ceramics; Dielectrics; Electric fields; Hysteresis; Permittivity; Temperature; Temperature dependence; ceramics; component; dielectric; ferroelectrics; properties;
Conference_Titel :
Applications of Ferroelectrics (ISAF), 2010 IEEE International Symposium on the
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4244-8190-3
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2010.5712274
