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

0351438 - FZÚ 2011 RIV GB eng J - Journal Article
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. E-ISSN 1361-648X
R&D Projects: GA ČR(CZ) GA202/09/0682
Institutional research plan: CEZ:AV0Z10100520; CEZ:AV0Z10100521
Keywords : dielectric and magnetic properties * ceramics * polarization * phase transitions
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.332, year: 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.
Permanent Link: http://hdl.handle.net/11104/0191194