Crystal Growth of Inter-Lanthanide LaLn′O3 (Ln′: Y, Ho—Lu) Perovskites from Hydroxide Fluxes.

Abstract In this article, we report the growth of single crystals of the inter-lanthanide series La Ln′ O 3 ( Ln′  = Y, Ho–Lu) using molten hydroxide fluxes. Inter-lanthanide oxides, LnLn′ O 3 (where Ln and Ln′  = lanthanides) typically crystallize in the A -, B - or C-Ln 2 O 3 or in the AB O 3 perovskite structure types, depending on the relative sizes of the lanthanide cations involved. The inter-lanthanide oxides, La Ln′ O 3 ( Ln′  = Y, Ho–Lu), reported herein were determined to crystallize in the orthorhombic ( Pnma ) perovskite-type structure. A discussion on the effect of cation radii on the resultant crystal structure for La Ln′ O 3 ( Ln′  = Y, Ho–Lu) and other reported inter-lanthanide oxides is presented herein.