Ardanova L. Isomorphous replasement calcium by alkaline and rare earth elements in structure of vanadate apatite

Isomorphous replasements atoms in crystals. Determination of limit composition of solid solution and establishment of regularity of formation of solid solution on the basis of calcium vanadate hydroxyapatite. X-ray powder diffraction, IR-spectroscopy, NMR, chemical analysis. Method of synthesis of Ca5(VO4)3OH and its solid solutions has been patented. Existence of solid solution, the parallel scheme of replasement: 2ОН- ® О2-+ " have been investigated. The method of calculation of limit composition has been elaborated. It has been stated that solid solutions which doped by rere earth elements have luminescence properties. Sphere of application is crystalchemistry.