0134343 - FZU-D 20030240 RIV NL eng J - Journal Article
Kamba, Stanislav - Samoukhina, Polina - Kadlec, Filip - Pokorný, Jan - Petzelt, Jan - Reaney, I. M. - Wise, P. L.
Composition dependence of the lattice vibrations in Sr_n+1Ti_nO_3n+1 Ruddlesden-Popper homologous series.
Journal of the European Ceramic Society. Roč. 23, - (2003), s. 2639-2645. ISSN 0955-2219. E-ISSN 1873-619X
R&D Projects: GA ČR GA202/01/0612; GA ČR GA203/99/0067
Institutional research plan: CEZ:AV0Z1010914
Keywords : dielectric properties * perovskites * spectroscopy
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.248, year: 2003

Room temperature infrared reflectivities, time-domain THz transmission spectra and micro-Raman spectra of ceramics Sr_n+1Ti_nO_3n+1 (where n=1,2,3,4,ě), were studied. Increasing the number of perovskite layers(n) in the crystal system resulted in higher polarizability of the lattice and softening of the lowest frequency phonon mode, which is responsible for the observed increase in microwave permittivity.
Permanent Link: http://hdl.handle.net/11104/0032249