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Soft-mode study in Li-doped KTaO.sub.3./sub..
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SYSNO ASEP 0100539 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Soft-mode study in Li-doped KTaO3. Title Studium měkkého módu v KTaO3 dopovaném Li Author(s) Železný, Vladimír (FZU-D) RID, ORCID
Pashkin, Alexej (FZU-D)
Petzelt, Jan (FZU-D) RID, ORCID, SAI
Savinov, Maxim (FZU-D) RID, ORCID
Trepakov, V. (RU)
Kapphan, S. (RU)Source Title Ferroelectrics. - : Taylor & Francis - ISSN 0015-0193
Roč. 302, - (2004), s. 195-197Number of pages 3 s. Language eng - English Country GB - United Kingdom Keywords dielectric spectroscopy ; incipient ferroelectrics ; relaxor Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GA202/01/0612 GA ČR - Czech Science Foundation (CSF) GA202/02/0238 GA ČR - Czech Science Foundation (CSF) LN00A015 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z1010914 - FZU-D Annotation The infrared and terahertz spectra of lithium doped KTaO3 have been studied. In Li-doped crystals the mode softening is not so prononunced and therfore, the mode contribution to static dielectric constant is lower. In addition to thet a typical relaxor behavior is observed in dielectric spectroscopy (102-109 Hz). The rise of the reflectivity and dielectric loss is observed below 10 cm-1, which indicates presence of a central peak Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2005
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