Zobrazeno 1 - 10
of 464
pro vyhledávání: '"Gregora, I."'
Autor:
More-Chevalier, J., Wdowik, U.D., Legut, D., Cichoň, S., de Prado, E., Gregora, I., Bulíř, J., Novotný, M., Fekete, L., Lančok, J.
Publikováno v:
In Applied Surface Science 1 April 2023 615
Publikováno v:
In Carbon 30 October 2020 168:319-327
Autor:
Hlinka, J., Ostapchuk, T., Buixaderas, E., Kadlec, C., Kuzel, P., Gregora, I., Kroupa, J., Savinov, M., Drahokoupil, J., Dec, J.
Publikováno v:
Phys. Rev. Lett. 112, 197601 (2014)
Polarized Raman, IR and time-domain THz spectroscopy of orthorhombic lead zirconate single crystals yielded a comprehensive picture of temperature-dependent quasiharmonic frequencies of its low-frequency phonon modes. It is argued that these modes pr
Externí odkaz:
http://arxiv.org/abs/1401.3730
Autor:
Borodavka, F., Gregora, I., Bartasyte, A., Margueron, S., Plausinaitiene, V., Abrutis, A., Hlinka, J.
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 investigated by Raman spectroscopy and piezoresponse force microscopy tec
Externí odkaz:
http://arxiv.org/abs/1304.3545
Publikováno v:
Phys. Rev. B 93, 064110 (2016)
The paper describes heterostructures spontaneously formed in PMN-PT single crystals cooled under bias electric field applied along [001]pc and then zero-field-heated in the vicinity of the so-called depoling temperature. In particular, formation of l
Externí odkaz:
http://arxiv.org/abs/1304.1879
Hyper-Raman scattering experiments allowed collecting the spectra of the lowest F1u-symmetry mode of PbTiO3 crystal in the paraelectric phase up to 930K as well as down to about 1K above the phase transition. It is realized that this mode is fully re
Externí odkaz:
http://arxiv.org/abs/1212.3982
Autor:
Hlinka, J., Zelezny, V., Gregora, I., Pokorny, J., Fogg, A. M., Claridge, J. B., Darling, G. R., Rosseinsky, M. J.
Publikováno v:
Phys. Rev. B 68, 220510(R) (2003)
The paper presents infrared reflectivity and micro-Raman scattering spectra of LiBC powder pellets. The experiment allowed assignment of frequencies of all infrared and Raman active zone center modes. Results are compared with available ab-initio cal
Externí odkaz:
http://arxiv.org/abs/cond-mat/0309066
Publikováno v:
Phys. Rev. B, 67 (2003) 020504
The paper presents polarized Raman scattering study on a few-micron-size crystallite of LiBC with natural faces. The experiment on as grown sample has revealed a four lattice modes with frequencies at 1276 cm^-1, 830 cm^-1, 546 cm^-1 and 170 cm^-1, r
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207683
Publikováno v:
Phys. Rev. B, 64 (2001) 14503 (R)
The paper presents detailed Raman scattering study of the unusually broad E2g phonon mode in MgB2 crystal. For the first time, it is shown by the polarized Raman scattering on few-micron-size crystallites with natural faces that the observed broad Ra
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105275
Publikováno v:
In Materials Science & Engineering B July 2015 197:10-17