Description of concentration polytypism in Cd_1-xCu_xIn₂Se₄ by commensurately modulated structures

Chem. Met. Alloys 2 (2009) 108-114

https://doi.org/10.30970/cma2.0094

L.G. АKSELRUD, I.А. IVASHCHENKO, О.F. ZMIY, I.D. ОLEKSEYUK, J. STEPIEN-DAMM

The description of polytypes as commensurately modulated structures with different modulation vectors is presented for the concentration polytypism appearing in the solid solution of the CdIn₂Se₄ compound in the multinary system Cd-Cu-In-Se. The crystal structure of the 4Q-Cd_1-xCu_xIn₂Se₄ polytype was determined.

Projections of the structure of CdIn₂Se₄ (space group P-42m): ideal structure onto the (a) XY and (b) YZ plane, disordered structure onto the (c) XY and (d) YZ plane.

Keywords

Chalcogenide / Polytype / Commensurate modulated structure