Structural and Thermal Properties of YMn<sub>1-x</sub>Ru<sub>x</sub>O<sub>3</sub>

Abstract

We report the structural and thermo-power measurement of the ruthenium doped YMnO3 compounds. The room temperature XRD study shows the single phase formation of the reported compounds with the incremental unit cell volume and lattice parameters attributed to the larger ionic radius of the Ru3+ (0.68 Å) and Ru4+ (0.62 Å) as compared with that of the Mn3+ (0.65 Å) Mn4+ (0.52 Å). The observed variation of lattice parameters provides us valuable information into the better consideration of the valence state of ruthenium, in these compounds. The thermo-power measurement reveals hole-like conduction mechanism for the thermo-electric transport.