Size effects in a relaxor: further insights into PMN

0432833 - FZÚ 2015 RIV GB eng J - Článek v odborném periodiku
Grigalaitis, R. - Ivanov, M. - Macutkevic, J. - Banys, J. - Carreaud, J. - Kiat, J. M. - Laguta, Valentyn - Zalar, B.
Size effects in a relaxor: further insights into PMN.
Journal of Physics-Condensed Matter. Roč. 26, č. 27 (2014), "272201-1"-"272201-8". ISSN 0953-8984. E-ISSN 1361-648X
Grant CEP: GA ČR GA13-11473S
Institucionální podpora: RVO:68378271
Klíčová slova: relaxor ferroelectrics * nanocrystalline materials * NMR
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.346, rok: 2014

Dielectric measurements of PbMg1/3Nb2/3O3 (PMN) powder and dense ceramics with grain sizes between 15 nm and two microns were carried out in a broad frequency range (20 Hz–1 GHz). Clear grain size dependence of relaxor behavior was evidenced. A progressive transformation from Vogel-Fulcher behavior towards the Arrhenius process in the PMN with reduction of grain size in both ceramics and powder was observed. The results of dielectric investigations are confirmed by Nuclear Magnetic Resonance experiments.
Trvalý link: http://hdl.handle.net/11104/0237193