Search NASA⌕ Search

SEARCH · Search NASA

Results for “O-Rb-Zn”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

Materials Data on Rb2Zn3O4 by Materials Project

Rb2Zn3O4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Rb1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Rb–O bond distances ranging from 2.82–3.28 Å. There are two inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded to four O2- atoms to form a mixture of edge and corner-sharing ZnO4 tetrahedra. There are a spread of Zn–O bond distances ranging from 1.99–2.08 Å. In the second Zn2+ site, Zn2+ is bonded to four equivalent O2- atoms to form a mixture of distorted edge and corner-sharing ZnO4 tetrahedra. There are two shorter (2.02 Å) and two longer (2.07 Å) Zn–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to three equivalent Rb1+ and three equivalent Zn2+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to three equivalent Rb1+ and three Zn2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on RbZnO3 by Materials Project

RbZnO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Rb is bonded to twelve equivalent O atoms to form RbO12 cuboctahedra that share corners with twelve equivalent RbO12 cuboctahedra, faces with six equivalent RbO12 cuboctahedra, and faces with eight equivalent ZnO6 octahedra. All Rb–O bond lengths are 2.94 Å. Zn is bonded to six equivalent O atoms to form ZnO6 octahedra that share corners with six equivalent ZnO6 octahedra and faces with eight equivalent RbO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Zn–O bond lengths are 2.08 Å. O is bonded to four equivalent Rb and two equivalent Zn atoms to form a mixture of distorted face, edge, and corner-sharing ORb4Zn2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°.

36 MATERIALS SCIENCE↗