Infrared and Raman studies of the dead grain-boundary layers in SrTiO.sub.3./sub. fine-grain ceramics

0085247 - FZÚ 2008 RIV GB eng J - Journal Article
Petzelt, Jan - Ostapchuk, Tetyana - Gregora, Ivan - Kužel, Petr - Liu, J. - Shen, Z.
Infrared and Raman studies of the dead grain-boundary layers in SrTiO₃ fine-grain ceramics.
[Infračervené a ramanovské studie mrtvé vrstvy na hranicích zrn jemnozrnné keramiky SrTiO₃.]
Journal of Physics-Condensed Matter. Roč. 19, - (2007), s. 1-16. ISSN 0953-8984. E-ISSN 1361-648X
R&D Projects: GA ČR GA202/04/0993; GA ČR GP202/06/P219; GA MŠMT LC512
Institutional research plan: CEZ:AV0Z10100520
Keywords : infrared reflectivity * Raman scattering * SrTiO₃ nanoceramics * dead layers
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.886, year: 2007

Infrared reflectivity, terahertz and Raman spectroscopy studies were carried out with two types of SrTiO₃ ceramic of mean grain size 1500 and 150 nm, and the results were compared with single-crystal data. Strong ferroelectric soft-mode stiffening was detected

Infračervená reflektivita, terahertzová a ramanovská spektra byla studována pro dva typy keramik SrTiO₃ se střední velikostí zrn 1500 a 150 nm a výsledky porovnány s monokrystaly. Bylo zjištěno silné ztvrdnutí feroelektrického měkkého módu
Permanent Link: http://hdl.handle.net/11104/0147802