skip to main content

SciTech ConnectSciTech Connect

Title: Structural and conductivity studies of CsK(SO{sub 4}){sub 0.32}(SeO{sub 4}){sub 0.68}Te(OH){sub 6}

The compound CsK(SO{sub 4}){sub 0.32}(SeO{sub 4}){sub 0.68}Te(OH){sub 6} crystallizes in the monoclinic P2{sub 1}/n space group. It was analyzed, at room temperature, using X-ray diffractometer data. The main feature of these atomic arrangements is the coexistence of three and different anions (SO{sub 4}{sup 2-}, SeO{sub 4}{sup 2-} and TeO{sub 6}{sup 6-}groups) in the unit cell, connected by hydrogen bonds which make the building of the crystal. The thermal analysis of the title compound shows three distinct endothermal peaks at 435, 460 and 475 K. Complex impedance measurements are performed on this material as a function of both temperature and frequency. The electric conduction has been studied. The temperature dependence on the conductivity indicates that the sample became an ionic conductor at high temperature. - Graphical abstract: Projection of crystal structure CsK(SO{sub 4}){sub 0.32}(SeO{sub 4}){sub 0.68}Te(OH){sub 6} on the ab plane. Highlights: Black-Right-Pointing-Pointer We have studied the results of the crystal structure of the new mixed compound. Black-Right-Pointing-Pointer We have characterized the phase transition observed in DSC curve. Black-Right-Pointing-Pointer The protonic conduction in our material is probably due to a hopping mechanism.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [1]
  1. Laboratoire de Chimie Inorganique, Universite de Sfax, Faculte des Sciences de Sfax, BP 1171, 3000 Sfax (Tunisia)
  2. (France)
  3. Laboratoire de l'Etat solide, Universite de Sfax, Faculte des Sciences de Sfax, BP 1171, 3000 Sfax (Tunisia)
Publication Date:
OSTI Identifier:
22149941
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 196; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CALORIMETRY; CRYSTALS; DIELECTRIC PROPERTIES; MONOCLINIC LATTICES; PHASE TRANSFORMATIONS; POTASSIUM COMPLEXES; SELENATES; SPACE GROUPS; SULFATES; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE; THERMAL ANALYSIS; X-RAY DIFFRACTION; X-RAY DIFFRACTOMETERS