Počet záznamů: 1

.sup.93./sup.Nb NMR and Fe.sup.3+./sup. EPR study of local magnetic properties of magnetoelectric Pb(Fe.sub.1/2./sub.Nb.sub.1/2./sub.)O.sub.3./sub..

  1. 1.
    0349840 - FZU-D 2011 RIV GB eng J - Článek v odborném periodiku
    Laguta, Valentyn - Rosa, Jan - Jastrabík, Lubomír - Blinc, R. - Cevc, P. - Zalar, B. - Remškar, M. - Raevskaya, S. I. - Raevski, I. P.
    93Nb NMR and Fe3+ EPR study of local magnetic properties of magnetoelectric Pb(Fe1/2Nb1/2)O3.
    Materials Research Bulletin. Roč. 45, č. 11 (2010), 1720-1727 ISSN 0025-5408
    Grant CEP: GA MŠk(CZ) 1M06002
    Výzkumný záměr: CEZ:AV0Z10100521
    Klíčová slova: Pb(Fe1/2Nb1/2)O3 * nuclear magnetic resonance (NMR) * EPR * microstructure
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 2.145, rok: 2010

    The 93Nb NMR and Fe3+ EPR spectra of a magnetoelectric Pb(Fe1/2Nb1/2)O3 (PFN) single crystal as well as of PFN ceramics and nanopowder have been measured. The relation between the chemical disorder and the local magnetic structure has been determined. The data show the occurrence of an antiferromagnetic (AFM) phase transition at 145 and 135 K in both single crystal and ceramic samples, respectively. The AFM phase transition is however essentially smeared out in the nanopowder. Two different Nb sites exist which have different local magnetic fields which are essentialy distributed in value.
    Trvalý link: http://hdl.handle.net/11104/0189977