title: A tetragonal form of dysprosium orthomolybdate at room temperature.
abstract: In the present tetragonal modification of dysprosium orthomolybdate, Dy(2)(MoO(4))(3), the Dy, one Mo and one O atom are located on a mirror plane with Wyckoff symbol 4e, while another Mo atom is located on a fourfold inverse axis, Wyckoff symbol 2a. A single crystal was selected from a polycrystalline mixture of the Dy(2)O(3)-ZrO(2)-MoO(3) system and was stable at room temperature for at least three months. The structure refinement does not indicate the presence of Zr on the Dy sites (to within 1% accuracy). Thus, the stabilization of the tetragonal form is due to disordered positions for a second O atom and split positions for a third O atom that also maintain the DyO(7) coordination, which is not expected for short Dy-O distances [2.243 (6)-2.393 (5) Å].
authors: Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, Sakhyanova Street 6, Ulan-Ude, Russian Federation.
authors: Sesegma
authors: S
authors: Dorzhieva
authors: Ihor
authors: I
authors: Chumak
authors: Angelina
authors: A
authors: Sarapulova
authors: Daria
authors: D
authors: Mikhailova
authors: Jibzema
authors: J
authors: Bazarova
authors: Helmut
authors: H
authors: Ehrenberg