Studies on order - Disorder transition, lattice expansion and ionic conductivity in aliovalent cation substituted Sm2Zr2O7 System

The aliovalent cation substitution on a pyrochlore lattice in (Sm,Zr)2-x(Sc,Ce)xO7 (x = 0, 0.1, 0.2, 0.3, 0.4, 0.5) system exhibits a order-disorder phase transition374