A structural and magnetic study of the CaLa1−xYxCrO4 system (0 ≤ x ≤ 1)

Abstract Using a solar concentration furnace the CaLa 1− x Y x CrO 4 solid solutions were prepared with composition range0 ≤ x ≤ 1. Depending on the yttrium content they belong either to the ideal or to distorted K 2 NiF 4 -type structures. The magnetic properties are characterized mostly by bidimensional antiferromagnetic couplings due to half-filled t 2 g orbitals of Cr 3+ , but for x = 1 the rather covalent Y O bonds give rise to three-dimensional-type interactions.