Engineering Physics Annotation << Back THE SIZES AND PROPERTIES CRYSTAL KLUSTERS CUBIC AND HEXAGONAL SYMMETRY WITH STRUCTURE OF MAGNETPLUMBITE AND SHPINEL E.F. KUSTOV, S.V. SEREBRJANNIKOV, A.J. MIROSHNICHENKO, V.P. CHEPARIN The structure of coordination spheres or orbits of the atoms which are on identical distances from the centre of crystals with HCP structure and shpinel structure, their sizes and coordination numbers and coordinates of atoms and emptiness is investigated. Orbits of atoms of all sub lattice octahedral and tetrahedral emptiness was calculated. As the basic structure are considered close packing structures FCC and HCP oxygen ions. The metal ions distribution of both structures is realized on octahedral and tetrahedral emptiness. The developed method is applied to calculation of structure of orbits кластеров with symmetry of crystal structure of hexaferrites and ferrites of shpinel. Key words: symmetry, kluster , structure, crystal. Contacts: E-mail: Kustovyf@mail.ru Pp. 31-42.