96 citations · 208 across the 6 of their papers we have counts for
6 papers
Possible coupling between magnons and phonons in multiferroic CaMn7O12
Filip Kadlec, Veronica Goian, Christelle Kadlec +7
Spin and lattice dynamics of CaMn7O12 ceramics were investigated using infrared, THz and inelastic neutron scattering (INS) spectroscopies in the temperature range 2 to 590 K, and,…
Absence of ferroelectricity in BiMnO3 ceramics
V. Goian, S. Kamba, M. Savinov +4
We performed factor-group analysis of all phonons in possible monoclinic C2/c and C2 structures of BiMnO3 and compared it with our experimental infrared and Raman spectra. We concl…
Magnetic and dielectric properties of multiferroic Eu0.5Ba0.25Sr0.25TiO3 ceramics
Veronica Goian, Stanislav Kamba, Premysl Vanek +3
Dielectric and magnetic properties of Eu0.5Ba0.25Sr0.25TiO3 are investigated between 10 K and 300 K in the frequency range from 10 Hz to 100 THz. A peak in permittivity revealed ne…
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…
Magnetodielectric effect and optic soft mode behaviour in quantum paraelectric EuTiO3 ceramics
S. Kamba, D. Nuzhnyy, P. Vanek +7
Infrared reflectivity and time-domain terahertz transmission spectra of EuTiO3 ceramics revealed a polar optic phonon at 6 - 300K, whose softening is fully responsible for the rece…
Dielectric spectra of a new relaxor ferroelectric system Ba2LnTi2Nb3O15 (Ln=La, Nd)
S. Kamba, S. Veljko, M. Kempa +7
New relaxor ferroelectric system has been synthesized. BLTN exhibits a smeared maximum of permittivity, characteristic of classic relaxor behaviour, with a peak shift from 185 K at…