Anomalous structural properties of some RCu2Ge2 compounds (R = La, Gd-Tm)

Rusinek, D.; Niewolski, J.; Czub, J.; Gondek, Ł.; Szytuła, A.

doi:10.2478/s13536-013-0136-2

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“…A systematic description of the R-T-Ge phase diagrams and the structural characteristics of the formed intermediate phases (Rrare earth, T-d-element) have been presented in [1]. As regards the R-Cu-Ge systems, the most studied compounds are RCuGe (LiGaGe/CaIn 2 , AlB 2 structure types) [2], R 3 Cu 4 Ge 4 (Gd 3 Cu 4 Ge 4 -type) [3], RCu 2 Ge 2 (CeAl 2 Ga 2type) [4], R 2 CuGe 6 (Ce 2 CuGe 6 -type) [5]. According to Jandelli et al [2] the RCuGe compounds containing R =La-Gd (except for Eu) belong to the AlB 2 -type structure while those containing R=Tb-Lu crystallize with the disordered CaIn 2 structure type.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Y-Cu-Ge System at 870 K

Konyk¹,

Romaka²,

Demchenko³

et al. 2020

Ch&Cht

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The phase equilibrium diagram of the Y-Cu-Ge ternary system was constructed at 870 K by X-ray diffractometry, metallographic and electron probe microanalyses over the whole concentration range. Formation of six ternary compounds YCuGe (LiGaGe-type), YCu 2 Ge 2 (CeAl 2 Ga 2-type), Y 3 Cu 4 Ge 4 (Gd 3 Cu 4 Ge 4-type), Y 2 CuGe 6 (Ce 2 CuGe 6-type), YCu 0.67 Ge 1.33 (AlB 2-type), and YCu 0.3 Ge 2 (CeNiSi 2-type) were observed.

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Section: Introductionmentioning

confidence: 99%