Crystal Structure of (NbSe₄)₃I and (NbSe₄)_{10/3}I CDW Compounds at 14 K

• Authors: M. Zubko , J. Kusz , A. Prodan , J. Bennett , P. Świec
• Languages of publication: EN

Abstracts

EN

Both (NbSe₄)₃I and (NbSe₄)_{10/3}I compounds are interesting system possessing quasi one-dimensional linear chain character and exhibiting nonlinear transport properties with a second order phase transition. The compounds are built of NbSe₄ antiprisms, stacked along the tetragonal c axis into chains in a screw-like arrangement. Performed X-ray low temperature single crystal diffraction measurements allowed to solve, refine and analyze crystal structures of both compounds at 14 K. While (NbSe₄)_{10/3}I compound undergoes structural phase transition to monoclinic phase, (NbSe₄)₃I remains in tetragonal symmetry. Iodine atoms are responsible for the differences in (NbSe₄)_{10/3}I and (NbSe₄)₃I structures causing different spacing in the infinite NbSe₄ chains.

Keywords

EN

61.50.Ks; 61.05.C-; 72.15.Nj; 61.72.Mm; 61.66.-f

Discipline

• 61.72.Mm: Grain and twin boundaries
• 61.50.Ks: Crystallographic aspects of phase transformations; pressure effects(see also 81.30.Hd in materials science)
• 61.66.-f: Structure of specific crystalline solids(for surface structure, see 68.35.B-)
• 61.05.C-: X-ray diffraction and scattering(for x-ray diffractometers, see 07.85.Jy; for x-ray studies of crystal defects, see 61.72.Dd, Ff)
• 72.15.Nj: Collective modes (e.g., in one-dimensional conductors)

• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 130
• Issue: 4
• Pages: 869-872

Dates

published

2016-10

Contributors

author

M. Zubko

• Institute of Materials Science, University of Silesia, Chorzów, Poland

author

J. Kusz

• Institute of Physics, University of Silesia, Katowice, Poland

author

A. Prodan

• Jožef Stefan Institute, Ljubljana, Slovenia

author

J. Bennett

• Department of Physics, Acadia University, Wolfville, Canada

author

P. Świec

• Institute of Materials Science, University of Silesia, Chorzów, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.130.869