Papers

Nano-ceramics have received a considerable attention during the last two decades due to their capability to demonstrate improved or unique characteristics as compared to conventional bulk ceramic materials. Gd₂Zr₂O₇ powders, synthesised by Solution combustion synthesis, were investigated in detail for the defect fluoritepyrochlore phase transition behaviour below 1500°C. Our Xrd and Raman analyses clearly reveal the structural phase transition in this system. X-ray diffraction data analyses confirm that there is a defect fluorite structure in Gd₂Zr₂O₇ , having cubic lattice. The rearrangement in anionic sublattice in this system during structural phase transition from the Pyrochlore phase to disordered fluorite results in the shift in Pyrochlore-related peak. Band gap energy of the sample was obtained from UV-Visible spectroscopic analysis of the sample. It was found to be 4.82 eV