6533b871fe1ef96bd12d0e74
RESEARCH PRODUCT
Super-Ionic State Studies in LNTN Solid Solutions by Raman Spectroscopy
N. V. SidorovN. TeplyаkovaM. N. PalatnikovK. BormanisE. Obryаdinasubject
Materials scienceTantalumchemistry.chemical_elementIonic bondingAtmospheric temperature rangeCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsIonsymbols.namesakechemistryChemical physicsPhase (matter)visual_artvisual_art.visual_art_mediumsymbolsCeramicRaman spectroscopySolid solutiondescription
Raman studies of the thermal phase transformations and structural disordering preceding transition to the super-ionic state in the Li0.12Na0.88TaуNb1-уO3 solid solution ceramics are reported. Disordering of the structure brought up by the extremely mobile Li+ ions at heating is found to be homogeneous and to proceed gradually. Disorientation and considerable deformation of the BO6 oxygen octahedrons facilitate translational mobility of the Li+ ions. The static disordering of the Nb5+ and Ta5+ sub-lattice caused by tantalum decreases the temperature of the phase transformation and increases the probability of transition to the super-ionic state supposed to occur over a broad temperature range.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-01-01 | Ferroelectrics |