Abstract
The purpose of this work was to compare the microstructure and electrical characteristics of BaTiO 3 devices doped with Zr for conventional fabrication and for mechanical alloying (MA). The sintered samples fabricated with MA powder showed better ZrO 2 dissolution and smaller grain sizes than the conventional samples. Lower values of loss factor and higher resistivities were observed in devices fabricated with MA powders. When the ZrO 2 concentration increases, the resistivity and the loss factor increase while the dielectric constant decreases. These effects are explained in terms of grain size reduction and lattice distortion.
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