Crystal Chemistry and Electrical Conductivity of Ln₂Eu₂O₃F₆ (Ln: Nd, La).

Abstract

Ln: Nd, La). -The title compounds are prepared by solid state reactions of Ln2O3 and EuF3 at 1000-1200°C. As revealed by powder XRD, the compounds crystallize in the monoclinic space group P12/c1 with Z = 1. Nd2Eu2O3F6 exhibits an oxide ion conductivity of 2.0 S/m at 500°C and a highly ordered ionic arrangement. The disorder of anionic arrangements in Nd results in lower oxide ion conductivities of 1.0 and 0.8 S/m, respectively. -(TAKASHIMA*, M.; YONEZAWA, S.; KIM, J.-H.; J. Alloys Compd. 408-412 (2006) 468-473; Cooperat. Res. Cent., Fukui Univ., Fukui 910, Japan; Eng.) -W. Pewestorf 20-015