Zobrazeno 1 - 10
of 45
pro vyhledávání: '"G. E. Kugel"'
Autor:
V. Porokhonskyy, I. Franke, J Fábry, D. Noujni, Jan Suchanicz, R. S. Klein, Jan Petzelt, G E Kugel, Alexej Pashkin, Stanislav Kamba, Krystian Roleder
Publikováno v:
Journal of Physics: Condensed Matter. 16:2719-2731
Infrared reflectivity, time-domain terahertz transmission, high-frequency dielectric measurements and Raman spectroscopy of Na0.5Bi0.5TiO3 complex ferroelectric perovskite were performed in a broad temperature range. The results were analysed conside
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6147c940015db0b144d4b1b61b7bfec7
https://doi.org/10.1088/0953-8984/16/15/022
https://doi.org/10.1088/0953-8984/16/15/022
Publikováno v:
Ferroelectrics. 296:57-66
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::701c21f6d0b37ca5caf9a644c1f1e7c6
https://doi.org/10.1080/00150190390238982
https://doi.org/10.1080/00150190390238982
Publikováno v:
Radiation Effects and Defects in Solids. 151:145-149
The 1/1 binary oxide of TeO2 and Bi2O3 exists in different oxidation forms. The composition stable at room temperature is Bi2TeO5, while at higher temperatures (600–700°C) the fully oxidized form, Bi2TeO6, is stable. The single crystal of Bi2TeO5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d7ed25db87d660054902273c1400f3d
https://doi.org/10.1080/10420159908245949
https://doi.org/10.1080/10420159908245949
Publikováno v:
Journal of Physics: Condensed Matter. 10:3659-3668
The first Raman spectroscopy results are presented on single crystals in the 10 to 800 frequency range for four polarization configurations. The temperature dependence of the spectra was followed and analysed in the 10-890 K region. Annealing the cry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dd77cdcffbaa40f4ca4d0daff91041e
https://doi.org/10.1088/0953-8984/10/16/017
https://doi.org/10.1088/0953-8984/10/16/017
Publikováno v:
Ferroelectrics. 202:183-191
In K6Li4Nb10O30 crystal, the excess of Nb modifies strongly the optical and non-linear properties: the dispersion curves of the refractive indices and the phase matching angles are calculated from literature results. Experimental SHG tests on our sam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a1da5b698ec5c2eb051cab2d1fdb597
https://doi.org/10.1080/00150199708213475
https://doi.org/10.1080/00150199708213475
Publikováno v:
Ferroelectrics. 202:131-138
The strong influence of Nb excess in K6Li4Nb10O30 (KLN) ferroelectric crystals on optical and second harmonic generation properties makes it necessary to develop a non-destructive characterization procedure. Raman spectra of KLN are very sensitive to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e97cbc70c36f5823aeb4fd6b25bf754e
https://doi.org/10.1080/00150199708213469
https://doi.org/10.1080/00150199708213469
Publikováno v:
Ferroelectrics. 198:77-97
Dielectric and other complementary measurements were carried out in order to confirm the AO-FR(LT)-FR(HT)-PC phase sequence and to determine the temperatures of each phase transition occurring in undoped PZT ceramics with Zr/Ti ratio 95/5 and Nb-dope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1202f5263fa8c3ff698b543161e13316
https://doi.org/10.1080/00150199708228340
https://doi.org/10.1080/00150199708228340
Publikováno v:
Ferroelectrics. 184:273-276
The quasi-elastic diffusion measured near the specific M2-M3 phase transition in the AgTa1−xNbxO3 system is described by a modified Debye relaxational function from which dielectric dispersion can be calculated in the 1 to 100 cm−1 frequency rang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60796e6b5e588ee086f7a887d6209027
https://doi.org/10.1080/00150199608230274
https://doi.org/10.1080/00150199608230274
Autor:
B. Mohamadou, G. E. Kugel
Publikováno v:
physica status solidi (b). 195:97-111
A detailed investigation of Raman light scattering was performed in potassium titanyl phosphate (KTiOPO4) using various scattering geometries. The modifications of the Raman frequencies and intensities were discussed in terms of change of selection r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9931f3fa9147c9e1826a731981adcb90
https://doi.org/10.1002/pssb.2221950111
https://doi.org/10.1002/pssb.2221950111
Publikováno v:
Journal of Physics: Condensed Matter. 8:1109-1121
Two crystals of with 1% and 5% Li have been investigated by inelastic neutron scattering. The transverse acoustic and lowest optic modes have been measured in the [100] direction from room temperature down to 10 K. The wavevector dependences of the m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a275bbef19108d7832e3ae37e7b7bae8
https://doi.org/10.1088/0953-8984/8/9/004
https://doi.org/10.1088/0953-8984/8/9/004