| Autor: | A. L. Karpei, A. I. Akimov, G. K. Savchuk |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Materials science
Condensed matter physics Phonon Ferroelectric ceramics Mineralogy Dielectric Condensed Matter Physics Lead zirconate titanate Spectral line Condensed Matter::Materials Science Transverse plane chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Ceramic Spectroscopy Solid solution |
| Zdroj: | Journal of Applied Spectroscopy. 67:976-980 |
| ISSN: | 0021-9037 |
| DOI: | 10.1023/a:1004168320640 |
| Popis: | We have investigated the IR reflection spectra of ferroelectric ceramics based on solid solutions of lead zirconate-titanate with a rhombohedral structure obtained by high-pressure cold precompaction. In the 55–65-cm−1 frequency range, we have revealed by experiment that the “soft” ferroelectric-active mode for the ceramics compacted by a higher pressure under the conditions of cold compaction is shifted into the region of lower frequencies. For the ceramics precompacted at various pressures, we have determined the frequencies of longitudinal and transverse phonons and calculated the frequency dependences of the imaginary and real parts of the dielectric constant. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink