Effect of rare earth element intersubstitution on structure and properties of (Pr, Nd, Sm)BaCoFeO5+δ solid solutions

Abstract

Using the solid-state reaction method, (Pr,Nd,Sm)BaCoFeO_5+δ solid solutions have been synthesized, their lattice constants and oxygen nonstoichiometry have been determined and their thermal expansion and electrical properties have been studied. It has been found that (Pr,Nd,Sm)BaCoFeO_5+δ solid solutions show positive deviations from ideality and their structural parameters, thermal and electrotransport properties can be controlled by intersubstitution of rare earth elements in their structure.