6533b82efe1ef96bd1293a88

RESEARCH PRODUCT

Heterovalent ion replacement in bi7Ti4NbO21: Some new compounds and phase transitions

L. Shebanovs

subject

DiffractionPhase transitionMaterials scienceMixed layerCationic polymerizationchemistry.chemical_elementDielectricCondensed Matter PhysicsFerroelectricityElectronic Optical and Magnetic MaterialsIonBismuthCrystallographychemistry

description

Abstract Simultaneous heterovalent substitutions at two cationic sites of the bismuth mixed-layered compound Bi7Ti4NbO21 have been made. Two new compounds: Bi2Pb⅓Ti(4/3)Mo⅓O7 and Bi(4/3)PbTiMo⅔O7, were obtained and identified by X-ray diffraction analysis. A model of possible mixed layer structure is discussed. Ferroelectric phase transitions at 510°C and 550°C have been studied by dielectric measurements.

https://doi.org/10.1080/00150199608210495