Crystal structure and Kondo lattice behavior ofCeNi9Si4

Intermetallic compounds in the M–Cu–Sn systems with M=Eu, Sr, Ba

“…This structure (Pearson code tI56) is an ordered tetragonal derivative of the cubic NaZn 13 -type (cF112) and was found for the first time by Bodak for CeNi 8.5 Si 4.5 [36], with a nearly complete ordering of the Ni and Si atoms. More recently the ordered structure of the CeNi 9 Si 4 phase was reported [37]. Fig.…”

“…All authors agree in observing the almost perfect phase purity on the chemical composition 1:9:4 and an ordered crystal structure for this phase. Regarding the distortion on going from the cubic model to the tetragonal one, it can be roughly measured by the deviation of the lattice parameters ratio from the ideal value c/a ¼ O2 ¼ [35], CeFe 9 Si 4 [42], MCo 9 Si 4 (M ¼ La [43], Pr [41], Nd [41], Sm [44], Tb [45]), CeCo 9 Ge 4 [46], LaNi 9 Si 4 and CeNi 9 Si 4 [37], SrCu 9 Si 4 , BaCu 9 Si 4 , SrCu 9 Ge 4 and BaCu 9 Ge 4 [47], MCu 9 Sn 4 (M ¼ Nd [17], Eu [12], Yb [5], Ca [9]). …”

Zinc-deficiency in intermetallics with the NaZn13 type

“…In recent years, intermetallic compounds crystallizing with the cubic NaZn 13 structure type (or its tetragonally distorted variant, known as the Ce 2 Ni 17 Si 9 type) have received a lot of attention mainly due to their magnetic and thermoelectric properties [1][2][3][4][5][6][7][8][9][10]. Many new members of this family have been synthesized and their structures and properties studied, including BaLi 7 Al 6 [1], EuCu 6.5 Al 6.5 [2], CeBe 13 [4], LaFe 13−x Si x [5], CeNi 9 Si 4 [10], among others.…”

PRINCEPS: A Computer-Based Approach to the Structural Description and Recognition of Trends within Structural Databases, and Its Application to the Ce-Ni-Si System

“…We take CeNi 9 Si 4 (tI56, I4{mcm) as the sample structure for this case, whose PRINCEPS analysis is summarized in Table 8 [88]. Compared to the phases discussed above, the overall projection quality is exceptionally low (only 19.79%), indicating that it is not closely related to any of the reference phases.…”