4 papers · 1 filter
Polar phonons in some compressively stressed epitaxial and polycrystalline SrTiO3 thin films
D. Nuzhnyy, J. Petzelt, S. Kamba +5
Several SrTiO3 (STO) thin films without electrodes processed by pulsed laser deposition, of thicknesses down to 40 nm, were studied using infrared transmission and reflection spect…
Grain Size Influence on Dynamics of Polar Nanoclusters in PMN-35%PT Ceramics: Broadband Dielectric and Infrared Spectra
V. Bovtun, S. Kamba, S. Veljko +9
Dielectric response e*(f,T) and polar phonon spectra of coarse grain (grain size ~ 4 mkm) and fine grain (grain size ~ 150 nm) ceramics of PbMg_(1/3)Nb_(2/3)O3-35%PbTiO3 were inves…
Spectroscopic properties and lattice dynamics of ferroelectric and related functional oxide ceramics
Jan Petzelt, Stanislav Kamba
Dielectric response as a function of frequency for high-permittivity dielectric and ferroelectric materials is discussed emphasizing the dynamic behaviour in the microwave and infr…
Ferroelectric Soft Modes in Ceramics and Films
J. Petzelt, S. Kamba, J. Hlinka
Ferroelectric soft mode properties in ceramics and thin films are reviewed and compared with single crystals. In general, the permittivity in ceramics and thin films is markedly re…