63 citations · 223 across the 12 of their papers we have counts for
13 papers · 1 filter
Experimentally constrained modeling of the Pockels response of KNbO3 and KTaNbO3
Virginie de Mestral, Lorenzo Bastonero, Petr Bednyakov +6
The soft-mode of electro-optic (EO) metal-oxide perovskites plays a critical role in determining their Pockels responses. This is the case of potassium tantalate niobate (KTN), whi…
Soft and chiral phonons in chiral phase of K3NiO2
Hong Dang Nguyen, Fedir Borodavka, Miroslav Lebeda +6
Raman scattering measurements confirmed the theoretical prediction that the structural phase transition from the achiral tetragonal to the chiral tetragonal phase, which occurs nea…
Dielectric, magnetic and lattice dynamics properties of double perovskite (Ca0.5Mn1.5)MnWO6
Hong Dang Nguyen, Alexei A. Belik, Petr Kužel +7
Recent dielectric and magnetic studies of (Ca0.5Mn1.5)MnWO6 ceramics [A.A. Belik, Chem. Mater. 36, 7604 (2024)] have classified this material as a rare hybrid multiferroic, with bo…
Phonon properties and unconventional heat transfer in quasi-2D crystal
Jan Zich, Antonín Sojka, Petr Levinský +10
Bi2O2Se belongs to a group of quasi-2D semiconductors that can replace silicon in future high-speed/low-power electronics. However, the correlation between crystal/band structure a…
Suppression of ferromagnetism in van der Waals insulator due to pressure-induced layer stacking variation
M. Misek, U. Dutta, P. Kral +15
Ferromagnetism in van der Waals insulators like CrBr3 is highly sensitive to structural modifications. We explore the pressure-driven structural and magnetic transformations of the…
Orbital angular momentum impact on light scattering by phonons tested experimentally
A. Pylypets, F. Borodavka, I. Rafalovskyi +4
Polarized Raman spectra of piezoelectric bismuth germanate single crystal were recorded using vortex light in order to verify the predicted symmetry selection rules for Raman scatt…
Terahertz Magnetic and Lattice Excitations in van der Waals Ferromagnet VI3
David Hovancik, Dalibor Repcek, Fedir Borodavka +7
We use the synergy of infrared, terahertz, and Raman spectroscopies with DFT calculations to shed light on the magnetic and lattice properties of VI3. The structural transition at…
Electromagnon in Y-type hexaferrite BaSrCoZnFeAlO
Jakub Vit, Filip Kadlec, Christelle Kadlec +5
We investigated static and dynamic magnetoelectric properties of single crystalline BaSrCoZnFeAlO which is a room-temperature multiferroic with Y-type hexaferrite cry…
Unusual ferroelectric and magnetic phases in multiferroic 2H-BaMnO ceramics
Stanislav Kamba, Dmitry Nuzhnyy, Maxim Savinov +16
The structural phase transition in hexagonal BaMnO occurring at =130 K was studied in ceramic samples using electron and X-ray diffraction, second harmonic generation as w…
Electromagnon in the Z-type hexaferrite
Filip Kadlec, Christelle Kadlec, Jakub Vit +12
We studied experimentally the high-temperature magnetoelectric prepared as ceramics (x = 0, 0.2) and a single crystal (x = 0.5…
Strong spin-phonon coupling in infrared and Raman spectra of SrMnO3
S. Kamba, V. Goian, V. Skoromets +9
Infrared reflectivity spectra of cubic SrMnO ceramics reveal 18 % stiffening of the lowest-frequency phonon below the antiferromagnetic phase transition occurring at T…
Ferroelectric nanodomains in epitaxial PbTiO3 films grown on SmScO3 and TbScO3 substrates
F. Borodavka, I. Gregora, A. Bartasyte +4
Domain structures of 320 nm thin epitaxial films of ferroelectric PbTiO3 grown by MOCVD technique in identical conditions on SmScO3 and TbScO3 perovskite sub- strates have been inv…
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…