Yablochkova N. Isomorphous substitution in the strontium hydroxovanadate structure

3/The object is the isomorphous substitution of atoms in the crystal structure; the aim is to establishe isomorphous substitution ranges of strontium by rare-earth elements and barium; of vanadium by phosphor in hydroxovanadate structure; the methods are XRD (DRON-2, URS-50IM), Rietveld refinement, IR spectroscopy (Perkin-Elmer Spectrum BX), diffusion reflectance spectroscopy (PERKIN-ELMER Lambda 9 UV/VIS/NIR Spectrophotometer) and chemical, thermogravimetric analysis; the new approach lies in investigation isomorphous substitution of rare-earth elements and barium for strontium, of phosphor by vanadium in the structure of hydroxovanadate; the results include the determination of the factors, which influence on the width of single phase region, and the ones, which have the influence on interatomic distance changes; the results of investigation may be used as database for expert in various branches of science and engineering; the field is inorganic chemistry, crystal chemistry, science of materials.