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RESEARCH PRODUCT
Synthesis, structure and conductivity of Ag2ZnSiO4, Ag2ZnGeO4 and Ag2BeSiO4
Guntars VaivarsTom HörlinJekabs Grinssubject
ChemistryInorganic chemistryIonic bondingGeneral ChemistryCrystal structureConductivityCondensed Matter PhysicsCrystallographyPowder DiffractometerIonic conductivityGeneral Materials ScienceOrthorhombic crystal systemIsostructuralMonoclinic crystal systemdescription
Abstract The compounds Ag2MM′O4 with MM′ = ZnSi, ZnGe and BeSi have been synthesised by reacting the corresponding Na compounds with molten AgNO3. The crystal structures of Ag2ZnSiO4 and Ag2ZnGeO4 have been refined from Cu K α1 powder diffractometer data by the Rietveld technique to RF = 3.3 and 7.1%, respectively. They are isostructural with monoclinic Na2ZnSiO4. The powder pattern of Ag2BeSiO4 indicates that it is isostructural with orthorhombic Na2BeSiO4. The conductivity of the compounds has been determined using ac impedance measurements. Ag2ZnSiO4 and Ag2BeSiO4 are ionic conductors, with conductivities that are very similar to those of their corresponding isostructural Na compounds. Ag2ZnGeO4 is an electronic semiconductor with σ(60 ° C ) = 1.0 × 10 −2 (Ω cm ) −1 .
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-06-01 | Solid State Ionics |