Far infrared and Raman response in tetragonal PZT ceramic films

0454637 - FZÚ 2016 RIV ES eng J - Článek v odborném periodiku
Buixaderas, Elena - Kadlec, Christelle - Vaněk, Přemysl - Drnovšek, S. - Uršič, H. - Malič, B.
Far infrared and Raman response in tetragonal PZT ceramic films.
Boletin de la Sociedad Espanola de Ceramica y Vidrio. Roč. 54, č. 6 (2015), s. 219-224. ISSN 0366-3175. E-ISSN 2173-0431
Grant CEP: GA ČR(CZ) GA14-25639S
Institucionální podpora: RVO:68378271
Klíčová slova: dielectric response * phonons * FIR spectroscopy * time-domain THz spectroscopy * Raman spectroscopy * effective medium * PZT
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 0.280, rok: 2015

PbZr0.38Ti0.62O3 and PbZr0.36Ti0.64O3 thick films deposited by screen printing on (0001) single crystal sapphire substrates and prepared at two different sintering temperatures, were studied by Fourier-transform infrared reflectivity, time-domain THz transmission spectroscopy and micro-Raman spectroscopy. The dielectric response is discussed using the Lichtenecker model to account for the porosity of the films and to obtain the dense bulk dielectric functions. Results are compared with bulk tetragonal PZT 42/58 ceramics. The dynamic response in the films is dominated by an overdamped lead-based vibration in the THz range, as known in PZT, but its evaluated dielectric contribution is affected by the porosity and roughness of the surface.
Trvalý link: http://hdl.handle.net/11104/0255301