Crystal structure of {alpha} Triple-Prime -(Zn{sub 1-x}Cd{sub x}){sub 3}As{sub 2} (x = 0.26)

Single crystals of the {alpha} Triple-Prime -phase of (Zn{sub 1-x}Cd{sub x}){sub 3}As{sub 2} solid solution (x = 0.26) have been prepared and investigated by X-ray diffraction analysis. The tetragonal unit-cell parameters are found to be a = b = 8.5377(2) A, c = 24.0666(9) A, sp. gr. I4{sub 1}/amd,...

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Bibliographic Details
Published in:Crystallography reports 2013-07, Vol.58 (4)
Main Authors: Volodina, G. F., Zakhvalinskii, V. S., Kravtsov, V. Kh
Format: Article
Language:English
Subjects:
CADMIUM ARSENIDES
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
FLUORITE
MONOCRYSTALS
SOLID SOLUTIONS
TETRAGONAL LATTICES
VACANCIES
X-RAY DIFFRACTION
ZINC ARSENIDES
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Summary:Single crystals of the {alpha} Triple-Prime -phase of (Zn{sub 1-x}Cd{sub x}){sub 3}As{sub 2} solid solution (x = 0.26) have been prepared and investigated by X-ray diffraction analysis. The tetragonal unit-cell parameters are found to be a = b = 8.5377(2) A, c = 24.0666(9) A, sp. gr. I4{sub 1}/amd, Z = 16. Zn and Cd atoms in the crystal statistically occupy three symmetrically independent positions in the mirror planes and are tetrahedrally coordinated by arsenic atoms. (Zn,Cd) tetrahedra share edges to form a three-dimensional structure framework. The {alpha} Triple-Prime -phase is geometrically related to the fluorite structure. The character of arrangement of tetrahedral vacancies in fluorite-like unit cells is revealed. Chains of tetrahedral vacancies form microchannels oriented parallel the a and b axes, which pierce the three-dimensional structure framework at different levels along the c axis. The structure of {alpha} Double-Prime -Cd{sub 3}As{sub 2} crystals is found to be similar to that of {alpha} Triple-Prime -(Zn{sub 0.74}Cd{sub 0.26}){sub 3}As{sub 2}.
ISSN:1063-7745
1562-689X
DOI:10.1134/S1063774513040226