6533b826fe1ef96bd1283aa5
RESEARCH PRODUCT
Chemical strain effects and changed lattice dynamic in (Sr1-1.5xBix)TiO3ceramics (x ≤ 0.15)
Ieva KranauskaitėŠ. BagdzevičiusKarlis BormanisJūras BanysAndris SternbergRobertas Grigalaitissubject
Materials scienceCondensed matter physicsRelaxation (NMR)Doping02 engineering and technology021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesFerroelectricityElectronic Optical and Magnetic MaterialsDielectric spectroscopyIonCondensed Matter::Materials ScienceDistribution functionNuclear magnetic resonanceLattice (order)visual_art0103 physical sciencesvisual_art.visual_art_mediumCeramic010306 general physics0210 nano-technologydescription
ABSTRACTIn this work lattice strain (induced by chemical Bi substitution on A-site) effects on the lattice dynamic of SrTiO3 ceramics were investigated by broadband dielectric spectroscopy in the very broad frequency range from 10 mHz up to 30 GHz and temperatures from 30 K to 500 K. Obtained results confirmed predicted induce of the ferroelectricity and suppression of the structural phase transition due to substitution of A-site ions – chemical straining of the lattice, both happening at the local scale but evident in macroscopic dielectric spectroscopy measurements. Calculated relaxation time distribution function broadens towards the longest relaxation times with temperature decrease and at the least doped ceramics (below 10 mol %) ferroelectric-relaxor like splitting is observed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-05-05 | Ferroelectrics |