Low-Dimensional Gadolinium Polyselenides: Thermodynamic Modelling, Crystals Growing and Crystal Structure

Abstract:

By thermodynamic modelling of the Gd—Se—I system, the optimal growth conditions for crystalline GdSe_1.85 and GdSe_1.80 gadolinium polyselenides, whose existence was proved in our previous works, have been determined. Based on the obtained information, the GdSe_1.85 and GdSe_1.80 crystals are grown by the vapor transport technique using iodine as the transport agent. The crystals produced are identified by microprobe and powder Xray diffraction analysis. It is shown that in case of GdSe_1.85 the crystal structure is typical for rare-earth polychalcogenide structures, but the unit cell represents metrically a previously unknown type.

• Periodical: Solid State Phenomena (Volume 257)
• Pages: 183-186
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.257.183
• Online since: October 2016
• Authors: T.P. Chusova, Liudmila Zelenina, Nina Podberezskaya
• Keywords: Crystal Growth by Vapor Transport, Gadolinium Polyselenides, Powder X-Ray Diffraction Study, Single Crystal X-Ray Diffraction Study, Thermodynamic Modelling

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