The BaAl4 Structure and its Derivatives from the R-Zn-Ga Systems
Seven new ternary RZn1+xGa3-x (R = Ce, Pr, Nd, Sm, Ho and Er) and R5Zn2Ga17 (R = Ce) phases are synthesized for the first time. Their crystal structures are solved on basis of X-ray powder diffraction data. The above mentioned compounds belong to the BaAl4 (space group I4/mmm) and Rb5Hg19 (space group I4/m) structure types. Details of the structure of the Ce5Zn2Ga17 compound and relationship with RZn2-xGa2+x (BaAl4 type) and R3Zn8-xGa3+x (La3Al11 type) are briefly discussed.
Yuriy Verbovytskyy and António Pereira Gonçalves
Y. Verbovytskyy and A. P. Gonçalves, "The BaAl4 Structure and its Derivatives from the R-Zn-Ga Systems", Solid State Phenomena, Vol. 194, pp. 5-9, 2013