Chemical strain effects and changed lattice dynamic in (Sr1-1.5xBix)TiO3ceramics (x ≤ 0.15)
| Autor: | Ieva Kranauskaitė, Š. Bagdzevičius, Karlis Bormanis, Jūras Banys, Andris Sternberg, Robertas Grigalaitis |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Condensed matter physics Relaxation (NMR) Doping 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Ferroelectricity Electronic Optical and Magnetic Materials Dielectric spectroscopy Ion Condensed Matter::Materials Science Distribution function Nuclear magnetic resonance Lattice (order) visual_art 0103 physical sciences visual_art.visual_art_medium Ceramic 010306 general physics 0210 nano-technology |
| Zdroj: | Ferroelectrics. 497:24-33 |
| ISSN: | 1563-5112 0015-0193 |
| DOI: | 10.1080/00150193.2016.1161464 |
| Popis: | In 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|