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Publication
Materials Research Bulletin
Paper
The synthesis and characterization of vanadium difluoride, NaVF3, KVF3, and RbVF3
Abstract
The divalent vanadium compounds, NaVF3, KVF3, and RbVF3, have been prepared. They have the cubic perovskite structure with lattice constants of 3.94, 4.10, and 4.17 Å respectively. Magnetic susceptibility measurements showed large negative paramagnetic Curie temperatures, but no evidence of long-range antiferromagnetic order. The conditions under which pure VF2 can be prepared have also been studied and a diagram showing the relationship between temperature, hydrogen-hydrogen fluoride ratio, and the phases formed in the V-F system has been constructed. Single crystals of VF2 have been grown and characterized magnetically and optically. © 1969.