Barium chromium oxide, Ba3Cr2O8, as grown by the traveling solvent floating-zone technique

Large single crystals of the incongruently melting compound tribarium dichromium octa­oxide, Ba3Cr2O8, were grown by the traveling solvent floating-zone technique for the first time and characterized by X-ray diffraction at room temperature. The structure is composed of CrO43− tetra­hedra and Ba2+ ions. The chromium ions are found in the rare +5 valence state and form double-layered triangular lattices, which are stacked along the c axis with …