High-Pressure Synthesis of an Alkali Metal–Transition Metal Laves Phase: KAg2

A new C14 Laves phase was synthesized by direct reaction of potassium and silver at high pressure in a diamond anvil cell. The structure was refined by Rietveld analysis on powder diffraction data in the space groupP63/mmcto anRF2value of 0.034. The lattice parameters area=5.589(5) andc=9.476(1). Fo...

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Bibliographic Details
Published inJournal of solid state chemistry Vol. 130; no. 2; pp. 311 - 315
Main Authors Hasegawa, M., Atou, T., Badding, J.V.
Format Journal Article
LanguageEnglish
Published San Diego, CA Elsevier Inc 01.05.1997
Elsevier
Subjects
Alloys
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Metals. Metallurgy
Physics
Structure of solids and liquids; crystallography
Structure of specific crystalline solids
Binary alloys
Compression
Chemical preparation
Laves phases
XRD
Experimental study
Potassium alloys
Silver base alloys
Very high pressure
Transition element alloys
Crystal structure
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Summary:A new C14 Laves phase was synthesized by direct reaction of potassium and silver at high pressure in a diamond anvil cell. The structure was refined by Rietveld analysis on powder diffraction data in the space groupP63/mmcto anRF2value of 0.034. The lattice parameters area=5.589(5) andc=9.476(1). Formation of this phase under pressure is in agreement with predictions based on Miedema's rules. A novel double-sided laser heating system was developed for the synthesis of KAg2.
ISSN:0022-4596
1095-726X
DOI:10.1006/jssc.1997.7391