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Figure 1

From: Complex magnetic properties associated with competing local and itinerant magnetism in \({\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}\)

Figure 1

Crystal structure of \({\text {Pr}}_2 {\text {Co}}_{0.86} {\text {Si}}_{2.88}\) belonging to the \({\text {U}}_2 {\text {RuSi}}_3\)-type structure (space group: P6/mmm) that is considered as a superstructure of \({\text {AlB}}_2\)-type structure. The doubling of the “a” (and “b”) lattice parameters in the superstructure allows splitting of Wyckoff sites and a regular arrangement of Co and Si atoms, which otherwise would not be possible in the \({\text {AlB}}_2\)-type structure. The white sectors in the Co and Si atom symbols show the proportion of the site-vacancies as estimated from the XRD data. Unit cell is marked in the left panel.

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