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New real ternary and pseudoternary phases in the Li-Au-In system |
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| Authors: | GS Dmytriv H Pauly H Ehrenberg |
| Institution: | a Department of Inorganic Chemistry, Ivan Franko Lviv National University, Kyryla i Mefodia 6, 79005 Lviv, Ukraine b Materials Science, Technische Universität Darmstadt, Petersenstrasse 23, D-64287 Darmstadt, Germany c Institute for Complex Materials, IFW Dresden, Helmholtzstrasse 20, D-01069 Dresden, Germany d Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany |
| Abstract: | Two real ternary lithium gold indides LiAu2In and Li280Au22In130 (Li0.65Au0.05In0.30) were found in the Li-Au-In system. They are isostructural to the respective Ag-alloys. LiAu2In crystallizes in the MnCu2Al-type structure (Fm-3m, Heusler phase, a=6.4982(8) Å, based on single crystal XRD-data) and Li280Au22In130 in the Li278Ag40In114-type structure (F-43m, a=19.9970(2) Å, based on powder XRD-data). The analogy of the two ternary systems Li-Au-In and Li-Ag-In is additionally reaffirmed by the wide homogeneity range of the pseudoternary solid solution with NaTl-type structure (Zintl phase),which expands not only in the direction of the quasibinary cut Li(AuxIn1−x) with 0≤x≤0.5, but also into the directions of both higher and lower Li-concentrations. |
| Keywords: | Intermetallic compounds Compound former Heusler phase Zintl phase |
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