Electrical propeties of Gd-doped PZT nanoceramic synthesized by high-energy ball milling

The nanocrystalline Pb1−xGdx(Zr0.53Ti0.47)1−x/4O3 (where x=0.04, 0.08 and 0.12) (PGZT) has been synthesized by a high-energy ball milling (mechanical activation synthesis) followed by sintering. The nanocrystalline PGZT obtained by this route has exceptionally high dielectric constant. X-ray diffraction studies showed that PGZT has tetragonal structure at all the compositions studied. Detailed studies of dielectric properties of PGZT as a function of temperature show a non-relaxor type ferroelectric diffused phase transition.