Crystal chemistry of ternary germanides, RM1?xGe2(1>x?0)

Crystal structure, thermal expansion and electrical properties of the new Al0.32ErGe2 compound

“…Refs. [11,13] also observed similar contraction results in the RE-M-Ge sys- tem (M = Fe, Co, Ni). This result probably relates to the partial occupancy of the Al atom position.…”

Electron counts, structural stability, and magnetism in BaCuSn2-CeNi1-Si2-type YT Ge2 (T= Cr, Mn, Fe, Co, and Ni)

“…Since there has been no reported data on the occupancy of the T site in the YTGe 2 (T= Fe, Co, and Ni) compounds from the last 30 years, with the exception of two phases YCo 0.55 Ge 2 and YMn 0.3 Ge 2 , part of this work focused on the examination of the T site composition and occupancy. [14,15,21] The results confirmed the defects on the T site for all five YT x Ge 2 compounds. To gain further insight into crystal structures and chemical compositions of these BaCuSn 2 -CeNi 1-x Si 2 -type YT x Ge 2 phases, single crystal X-ray diffraction was carried out to extract accurate atomic positions.…”

X-ray investigation of the R–Fe–Sn ternary systems (R–Y, Gd)

“…In the solid solution range of materials, the atomic arrangement of the compounds corresponds to the structure of CeNiSi 2 -type, which is closely related to ZrSi 2 . However, because of the small Fe content (occupation number 0.5) and the existence of the binary ZrSi 2 -type phase, it should be considered that there is rather a solid solution than a true ternary compound system [11].…”

“…Taking into account the analyses made in Refs. [6,7,11] the iron concentration dependencies of the cell parameter ratios b/S (S being the surface of cell in the xz-plane, equal to ac) and a/c were analysed. When the a/c ratio remains the same for all the solid solution alloys as very close 1.080, the value of the b/S ratio decreases up to the limit of the YFe x Sn 2 solid solution as shown in Fig.…”