CaNi/sub 12/B/sub 6/: a new boride of the SrNi/sub 12/B/sub 6/ structure type

Journal Article · Sun Nov 01 00:00:00 EST 1987 · Inorg. Mater. (Engl. Transl.); (United States)

OSTI ID:5185946

Leshko, L V; Kuz'ma, Yu B

The structure of CaNi/sub 12/B/sub 6/ has been examined from the diffraction pattern (DRON-3.0, Cu K/sub ..cap alpha../ radiation). When the pattern had been indexed to the hexagonal system, the cell parameters were found as ..cap alpha.. = 9.542 (3); c = 7.420 (3) A. The coordinates of the Ca and Ni atoms were refined via the PMNK program with an SM-4 computer, with the initial coordinates those for the metal atoms in SrNi/sub 12/B/sub 6/. The coordinates of the boron atoms were not refined, being taken the same as in SrNi/sub 12/B/sub 6/. The final values for the coordinates (space group R3m) are Ca at 3 (..cap alpha..) 000, B = 3.3 (5) A/sup 2/; 18 Nil at 18 (g) (x = 0.369(2)), B = 0.7(1) A/sup 2/; 18Ni2 at 18 (h) (x = 0.426(1), z = 0.031(2)), B = 0.5(1) A/sup 2/; 18B at 18 (h) (x = 0.191, z = 0.042), B = 3.3(5) A/sup 2/. The intensities were calculated for these coordinates, reliability factor R = 0.108

• Research Organization: I. Franko L'vov State Univ. (USSR)
• OSTI ID: 5185946
• Journal Information: Inorg. Mater. (Engl. Transl.); (United States), Vol. 23:6; Other Information: Translated from Izv. Akad. Nauk SSSR, Neorg, Mater.; 23: No. 6, 1033-1035(Jun 1987)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCIUM BORIDES
HEXAGONAL LATTICES
NICKEL BORIDES
COMPUTERIZED SIMULATION
INTERATOMIC DISTANCES
LATTICE PARAMETERS
PHASE STUDIES
STRONTIUM BORIDES
SYNTHESIS
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
BORIDES
BORON COMPOUNDS
CALCIUM COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DISTANCE
NICKEL COMPOUNDS
SCATTERING
SIMULATION
STRONTIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies