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Dielectric tunability in (1−x)[Pb(Mg1/3Nb2/3)O3]−xPbTiO3 ceramics for tunable devices application

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.