Lattice dynamics and dielectric response of undoped, soft and hard PbZr.sub.0.42./sub.Ti.sub.0.58./sub.O.sub.3./sub..

0352364 - FZÚ 2011 RIV GB eng J - Článek v odborném periodiku
Buixaderas, Elena - Nuzhnyy, Dmitry - Vaněk, Přemysl - Gregora, Ivan - Petzelt, Jan - Porokhonskyy, V. - Jin, L. - Damjanović, D.
Lattice dynamics and dielectric response of undoped, soft and hard PbZr_0.42Ti_0.58O₃.
Phase Transitions. Roč. 83, 10-11 (2010), s. 917-930. ISSN 0141-1594. E-ISSN 1029-0338
Grant CEP: GA AV ČR KAN301370701; GA ČR GAP204/10/0616
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: infrared and Raman spectroscopy * THz spectroscopy * phonons * dielectric response * soft and hard PZT ceramics
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.006, rok: 2010

Ceramic samples of lead zirconate titanate Pb(Zr0.42Ti0.58)O3 (PZT 42/58) doped with Fe (hard) and Nb (soft) were studied by Raman, infrared and THz spectroscopy in temperature range from 900 K to 20 K. From the evaluation of the infrared and Raman phonons in undoped ceramics we conclude that tetragonal PZT ceramics undergo a low-temperature phase transition to tilted phase revealed in the anomalies of phonon parameters and the appearance of new modes. Doped samples presented similar behaviour.
Trvalý link: http://hdl.handle.net/11104/0191885