Synthesis and characterization of high dielectric nano zirconium oxide

Abstract High dielectric constant nano zirconium oxide (ZrO 2 ) powder has been synthesized through a hydrothermal technique. The structural characterization of prepared sample was obtained by X-ray diffraction and showed mixed phase (orthorhombic and monoclinic). Further, the surface morphology of synthesized nano zirconium oxide (zirconia) was obtained by scanning electron microscopy (SEM). The frequency dependence of dielectric constant, dielectric loss and impedance of the sample was investigated at room temperature. Our result shows that, the dielectric constant of prepared sample is about 24 at 10 6  Hz frequency and the obtained value was approximately 3 times more than the dielectric constant of commercially available zirconium oxide.