Rare earth ion doped cubic yttria nanopowders is used for fabrication
of transparent ceramics laser materials by nanocrystalline technology
and vacuum sintering method [1,2]. Synthesis of nanocrystalline
particles is the basic requirement for fabrication of transparent ceramics,
because nanopowders exhibit high surface area and offer low
temperature sintering for achieving nano-grained sintered microstructures.
Highly phase pure, fine mono dispersed particles, with close to
spherical shape and size less than 1000 nm are desirable to obtain
dense ceramics [3]