Ternary System Tm—Cu—Ge: Isothermal Section of the Phase Diagram at 870 K and Crystal Structures of the Compounds.

Abstract

Structure Structure D 2000Ternary System Tm-Cu-Ge: Isothermal Section of the Phase Diagram at 870 K and Crystal Structures of the Compounds. -Four ternary compounds are identified in the 870 K isothermal section of the title system and their structures are determined by Rietveld refinement of powder XRD data. The known compounds TmCu2Ge2, Tm2CuGe6, and Tm6Cu8Ge8 crystallize in the space groups I4/mmm, Amm2, and Immm, respectively. The new ternary copper germanide TmCu 1.24 Ge 0.76 crystallizes in the hexagonal space group P6 3 /mmc and is isostructural with CaIn 2 . -(FEDYNA, L. O.; BODAK*, O. I.; TOKAYCHUK, Y. O.; FEDYNA, M. F.; MOKRA, I. R.; J. Alloys Compd. 367 (2004) 1-2, 70-75; Dep. Inorg. Chem., Ivan Franko Natl. Univ. L'viv, L'viv 79005, Ukraine; Eng.) -Schramke 24-009

Quantum Criticality Based on Large Ising Spins: YbCo$_2$Ge$_4$ with New 1-2-4 Structure Type

“…These problems may have hindered identification of the 124 structure in past surveys: Materials having exact 124 formula has not been reported so far in R-Co-Ge system. However, Tm 0.15 Co 0.30 Ge 0.55 was previously observed during a Tm-Co-Ge ternary phase diagram study as one of compounds with unknown structures [16], We guess that the reported Tm 0.15 Co 0.30 Ge 0.55 was identical to our 124 compound.…”

Metallic alloys at the edge of complexity: structural aspects, chemical bonding and physical properties*

“…Among ternary tetrelides, one of the most structurally complex family encompasses phases with the general composition RE 117 M 52+x Tt 112+y , where RE is a rare-earth metal, M is Cr, Fe, Co, or Ni, and Tt is Ge or Sn [46,47,[294][295][296][297][298][299][300][301][302][303][304][305][306]. All these compounds, despite small structural differences, crystallize in giant face-centered cubic unit cells with more than 1000 atoms.…”