Počet záznamů: 1

Bulk dielectric and magnetic properties of PFW-PZT ceramics: absence of magnetically switched-off polarization

  1. 1.
    0351438 - FZU-D 2011 RIV GB eng J - Článek v odborném periodiku
    Kempa, Martin - Kamba, Stanislav - Savinov, Maxim - Maryško, Miroslav - Frait, Zdeněk - Vaněk, Přemysl - Tomczyk, M. - Vilarinho, P. M.
    Bulk dielectric and magnetic properties of PFW-PZT ceramics: absence of magnetically switched-off polarization.
    Journal of Physics-Condensed Matter. Roč. 22, č. 44 (2010), 445902/1-445902/5 ISSN 0953-8984
    Grant CEP: GA ČR(CZ) GA202/09/0682
    Výzkumný záměr: CEZ:AV0Z10100520; CEZ:AV0Z10100521
    Klíčová slova: dielectric and magnetic properties * ceramics * polarization * phase transitions
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 2.332, rok: 2010

    We investigated ceramic solid solutions of [PbFe2/3W1/3O 3 3]x–[PbZr0.53Ti0.47O3]1-x (PFWx–PZT1-x, x = 0.2 and 0.3) by dielectric spectroscopy, DSC, and SQUID magnetometry. We did not confirm previous observations on reversible suppression of ferroelectric polarization in PFWx–PZT1-x thin films for magnetic fields above 0.5 T. We did not observe any change of ferroelectric polarization with external magnetic fields up to 3.2 T. Our data revealed classical ferroelectric properties, and paramagnetic behavior was observed down to 4.5 K instead of previously reported relaxor magnetic behavior. It seems that the reported switching-off of ferroelectric polarization in the films is not an intrinsic property.
    Trvalý link: http://hdl.handle.net/11104/0191194