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Department of Dielectrics

Institute of Physics of the Czech Academy of Sciences


Light and neutron scattering

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N. N. Kovaleva, D. Chvostova, Z. Potůček, H. D. Cho, X. Fu, L. Fekete, J. Pokorny, Z. Bryknar, K. I. Kugel, and A. Dejneka,

Efficient green emission from edge states in graphene perforated by nitrogen plasma treatment

2D Mater. 6, 045021 (2019).
K. Tesar, I. Gregora, P. Beresova, P. Vanek, P. Ondrejkovic, and J. Hlinka,

Raman scattering yields cubic crystal grain orientation

Scientific Reports 9, 9385 (2019).
R. Le Parc, E. Buixaderas, C. Levelut, P. Hermet, A. S. Pereira, O. Cambon, C. Roiland, P. Simon, and J. Haines,

Ultrastable phonon frequencies in α-quartz-type BPO4 at high temperature

Appl. Phys. Lett. 115, 141902 (2019).
A. Bartasyte, S. Margueron, A. M. Glazer, E. Simon, I. Gregora, S. Huband, and P. A. Thomas,

Vibrational modes and overlap matrix of LiNb1−xTaxO3 mixed crystals

Phys. Rev. B 99, 094306 (2019).
E. Buixaderas, M. Kempa, V. Bovtun, C. Kadlec, M. Savinov, F. Borodavka, P. Vaněk, G. Steciuk, L. Palatinus, and J. Dec,

Multiple polarization mechanisms across the ferroelectric phase transition of the tetragonal tungsten-bronze Sr0.35Ba0.69Nb2O6.04

Phys. Rev. Materials 2, 124402 (2018).
J. Sejkora, E. Buixaderas, P. Škácha, and J. Plášil,

Micro-Raman spectroscopy of natural members along CuSbS2–CuSbSe2 join

J Raman Spectrosc. 49, 1364 (2018).
M. Paściak, M. Kopecký, J. Kub, J. Fábry, J. Dec, P. Ondrejkovic, J. Hlinka, and E. Buixaderas,

X-ray diffuse scattering observations for SrxBa1-xNb2O6 single crystals with x=0.35 and 0.81

Phase trasnitions 91, 969 (2018).
E. Buixaderas, P. Bérešová, P. Ondrejkovič, P. Vaněk, M. Savinov, P. Bednyakov, J. Dec, D. Mareš, M. Ševčík, and M. Landa,

Acoustic phonons in unfilled tetragonal tungsten-bronze crystals

Phase Transitions 91, 976 (2018).
E. Buixaderas, C. Kadlec, M. Kempa, V. Bovtun, M. Savinov, P. Bednyakov, J. Hlinka, and J. Dec,

Fast polarization mechanisms in the uniaxial tungsten-bronze relaxor strontium barium niobate SBN-81

Scientific Reports 7, 18034 (2017).
E.M. Anghel, P.M. Pavel, M. Constantinescu, S. Petrescu, I. Atkinson, and E. Buixaderas,

Thermal transfer performance of a spherical encapsulated PEG 6000-based composite for thermal energy storage

Appl. Energ. 208, 1222 (2017).
P. Ondrejkovič,

Studies of relaxor ferroelectrics with spontaneous polar nanoregions

Doctoral thesis, Charles University (2017).
I. Rafalovskyi, M. Guennou, I. Gregora, and J. Hlinka,

Macroscopic lamellar heterophase pattern in Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals

Phys. Rev. B 93, 064110(R) (2016).
J. Hlinka, F. Borodavka, I. Rafalovskyi, Z. Dočekalová, J. Pokorný, I. Gregora, V. Tsurkan, H. Nakamura, F. Mayr, C. A. Kuntscher, A. Loidl, S. Bordács, D. Szaller, H.-J. Lee, J. H. Lee, and I. Kézsmárki,

Lattice modes and the Jahn-Teller ferroelectric transition of GaV4S8

Phys. Rev. B 94, 060104(R) (2016).
E. Buixaderas, I. Gregora, M. Savinov, J. Hlinka, Li Jin, D. Damjanovic, and B. Malic,

Compositional behavior of Raman active phonons in Pb(Zr1-xTix)3 ceramics

Phys. Rev. B 91, 014104 (2015).
M. Rameš, V. Železný, I. Gregora, T. Wolf, and M. Jirsa,

Interaction of phonons with intraband electronic excitations and crystal field transitions in Raman spectra of (Nd,Eu,Gd)Ba2Cu3Oy crystals

Mat. Sci. Eng. B 197, 10 (2015).
P. Ondrejkovic, M. Kempa, J. Kulda, B. Frick, M. Appel, J. Combet, J. Dec, T. Lukasiewicz, and J. Hlinka,

Dynamics of Nanoscale Polarization Fluctuations in a Uniaxial Relaxor

Phys. Rev. Lett. 113, 167601 (2014).
M. Kempa, P. Ondrejkovic, P. Bourges, P. Marton, and J. Hlinka,

Lattice dynamics of NaI studied by inelastic neutron scattering: Absence of thermally induced discrete breathers

Phys. Rev. B 89, 054308 (2014).
J. Hlinka, B. Hehlen, A.Kania, and I. Gregora,

Soft mode in cubic PbTiO3 by hyper-Raman scattering

Phys. Rev. B 87, 064101 (2013).
2012 and older
P. Ondrejkovic, M. Kempa, Y. Vysochanskii, P. Saint-Gregoire, P. Bourges, K.Z. Rushchanskii, and J. Hlinka,

Neutron scattering study of ferroelectric Sn2P2S6 under pressure

Phys. Rev. B 86, 224106 (2012).
J. Hlinka, P. Ondrejkovic, M. Kempa, E. Borissenko, M. Krisch, X. Long, and Z.-G. Ye,

Soft antiferroelectric fluctuations in morphotropic PbZr1-xTixO3 single crystals as evidenced by inelastic x-ray scattering

Phys. Rev. B 83, 140101 (2011).
J. Hlinka, E. Simon, C. Bogicevic, F. Karolak, and P.-E. Janolin,

Geometric resonances in far-infrared reflectance spectra of PbTiO3 ceramics

Phys. Rev. B 84, 092104 (2011).
J. Hlinka, J. Pokorný, S. Karimi, and I.M. Reaney,

Angular dispersion of oblique phonon modes in BiFeO3 from micro-Raman scattering

Phys. Rev. B 83, 020101(R) (2011).