Structural properties of (Nd.sub.0.33./sub.Eu.sub.0.2./sub.Gd.sub.0.47./sub.)Ba.sub.2./sub.Cu.sub.3./sub.O.sub.y./sub. studied by magnetic and infrared measurements

0348031 - FZÚ 2011 RIV GB eng J - Článek v odborném periodiku
Rameš, Michal - Železný, Vladimír - Ta Phuoc, V. - Gervais, F. - Wolf, T. - Jirsa, Miloš
Structural properties of (Nd_0.33Eu_0.2Gd_0.47)Ba₂Cu₃O_y studied by magnetic and infrared measurements.
Journal of Physics: Conference Series. Roč. 234, č. 1 (2010), 012032/1-012032/6. ISSN 1742-6588. E-ISSN 1742-6596
Grant CEP: GA ČR GA202/08/0722
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: magnetic properties * optical properties * phonons * other intermetallic compounds * transport properties
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
http://dx.doi.org/10.1088/1742-6596/234/1/012032

Reflectance spectra of superconducting single crystal (Nd_0.33Eu_0.2Gd_0.47)Ba₂Cu₃O_y were measured together with its electric amd magnetic properties. The optical response functions were obtained from the reflectivity spectra by means of the Kramers-Kronig analysis with the appropriate low- and high-frequency extrapolations of the experimentally determined reflectance. The reflectance spectra were fitted by Drude-Lorentz model in order to obtain temperature dependence of the model parameters. The fits were consistent with the optical response functions. A significant drop of the Drude free-electron term was observed under Tc.
Trvalý link: http://hdl.handle.net/11104/0188655