P. Melnikov, C. Parada, I. Bueno
Jan 11, 1993
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Influential Citations
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Journal
Journal of Alloys and Compounds
Abstract
Abstract Synthesis and crystallographic data are reported for a family of double rubidium-rare earth chromates RbLn(CrO 4 ) 2 , where LnLaLu, Y and Sc. The compounds are closely related to the potassium chromates KLn(CrO 4 ) 2 but with a slightly different distribution of structural types: those of La, Pr and Nd are monoclinic, Sm, Eu, Gd are orthorhombic and those of Tb-Lu are also monoclinic but with another unit cell. RbSc(CrO 4 ) 2 has high and low temperature forms: hexagonal and monoclinic respectively. Lattice parameters of all the above compounds are given. Thermal decomposition takes place over 450 °C leading to the rare earth chromites and Cr 2 O 3 .