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https://dspace.uzhnu.edu.ua/jspui/handle/lib/55997
Title: | Structural phase transitions and their influence on Cu+ mobility in superionic ferroelastic Cu6PS5І single crystals |
Other Titles: | conference |
Authors: | Кайнц, Діана Іванівна Gagor A. Pietraszko A. Drozd M. Polomska M. |
Issue Date: | 13-Jul-2005 |
Citation: | Materials Science- Poland, 2006, 24(1), p. 237–243 |
Abstract: | The structural origin of Cu+ ions conductivity in Cu6PS5I single crystals is described in terms of structural phase transitions studied by X-ray diffraction, polarizing microscope and calorimetric measurements. Below the phase transition at Tc=(144-169) K Cu6PS5I belongs to monoclinic, ferroelastic phase, space group Cc. Above Tc crystal changes the symmetry to cubic superstructure, space group F-43c (a=19.528); finally at 274K disordering of the Cu+ ions increases the symmetry to F-43m, (a=9.794). The phase transition at 274K coincides well with a strong anomaly in electrical conductivity observed in the Arrhenius plot. Diffusion paths for Cu+ ions are evidenced by means of the atomic displacement factors and split model. Influence of the copper stechiometry on the Tc is also discussed. |
Type: | Text |
Publication type: | Стаття |
URI: | https://doi.org/10.48550/arXiv.cond-mat/0507300 https://dspace.uzhnu.edu.ua/jspui/handle/lib/55997 |
Appears in Collections: | Наукові публікації кафедри міського будівництва і господарства |
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File | Description | Size | Format | |
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0507300.pdf | 341.41 kB | Adobe PDF | View/Open |
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