Jump to main content
Jump to site search

Issue 9, 2016
Previous Article Next Article

Ternary rare earth silicides RE2M3Si4 (RE = Sc, Y, Lu; M = Mo, W): crystal structure, coloring and electronic properties

Author affiliations

Abstract

The ternary compounds Sc2Mo3Si4, Y2Mo3Si4, Lu2Mo3Si4 and Sc2W3Si4 have been synthesized using arc melting and structurally characterized using single crystal X-ray diffraction. The compounds are isostructural with Gd5Si4 but with coloring (order of the rare earth and transition metals) on the Gd site. In contrast to group 4 and 5 ternaries of the same type, we observe no site mixing between the rare earth and transition metals. The Y compound displays a different, less common coloring from the others and through DFT calculations and investigation of the solid solution between Sc2Mo3Si4 and Y2Mo3Si4 it is shown that the different coloring of the latter is only marginally more stable. The electronic structures of the ternary compounds have been investigated using DFT calculations, yielding densities of states very similar to Gd5Si4. These predict metallic behavior and no magnetism, which is confirmed through resistivity and magnetization measurements.

Graphical abstract: Ternary rare earth silicides RE2M3Si4 (RE = Sc, Y, Lu; M = Mo, W): crystal structure, coloring and electronic properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 11 Oct 2015, accepted on 18 Jan 2016 and first published on 22 Jan 2016


Article type: Paper
DOI: 10.1039/C5DT03976B
Author version
available:
Download author version (PDF)
Citation: Dalton Trans., 2016,45, 3771-3777
  •   Request permissions

    Ternary rare earth silicides RE2M3Si4 (RE = Sc, Y, Lu; M = Mo, W): crystal structure, coloring and electronic properties

    M. B. Nielsen, W. Xie and R. J. Cava, Dalton Trans., 2016, 45, 3771
    DOI: 10.1039/C5DT03976B

Search articles by author

Spotlight

Advertisements