ChemInform Abstract: Peculiarities of the Crystal Structure and the Electric Properties of the Solid Solutions La1‐xMxVO3 (M: Li, Rb, Cs).

Abstract

ChemInform Abstract The title compounds with 0 < x ≤ 0.3, prepared by heating mixtures of MVO3 and LaVO3 to 1420-1470 K for 60 h, have the perovskite structure. The lithium compounds La1-xLixVO3 have a structure which is analogous to that of LaVO3 (GdFeO3 type, space group Pbnm), whereas the remaining compounds La1-xMxVO3 (M: Rb, Cs) have a rhombohedrally distorted perovskite structure (space group D6 3d-R3c). LaVO3 is known to be a p-type semiconductor. The title compounds, however, change the character of their conductivity from p-type at low temp. to metallic at elevated temperatures.

Electronic Conduction in Oxides

“…CaCr03 shows canted antiferromagnetism below 325 K, and is metallic in the entire temperature range [139,140]. Thus this is a rare example in which antiferromagnetism and metallic conductivity coexist.…”

“…The susceptibility shows a broad maximum at 430 K [196]. The susceptibility is Pauli paramagnetic [139,227]. The susceptibility is Pauli paramagnetic [139,227].…”