Title :
Magnetodielectric properties of (1−x)PMN-PT/xCFO particulate composites
Author :
Zabotto, F.L. ; Gualdi, A.J. ; de Oliveira, A.J.A. ; Eiras, J.A. ; Garcia, D.
Author_Institution :
Ferroelectric Ceramics Group (GCFerr), Univ. of Sao Carlos, São Carlos, Brazil
Abstract :
The magnetic field dependence of the magnetodielectric effect of (1-x)PMN-PT/xCFO particulate composites was systematically investigated. At room temperature, it was found there is a giant magnetodielectric response up to 10% around the electromechanical resonance frequency for a magnetic field of 15kOe. Additionally, at low magnetic fields a positive magnetodielectric coefficient (~2%) associated to the magnetoelectric coupling polarization and dependent of the CFO concentration was observed.
Keywords :
cobalt compounds; composite materials; dielectric polarisation; electromechanical effects; ferroelectric materials; ferroelectricity; lead compounds; magnetoelectric effects; PMN-PbTiO3-CoFe2O4; electromechanical resonance frequency; ferroelectric phase; giant magnetodielectric response; magnetic field dependence; magnetoelectric coupling polarization; particulate composites; positive magnetodielectric coefficient; temperature 293 K to 298 K; Magnetic field measurement; Magnetic resonance; Magnetic separation; Magnetoelectric effects; Magnetostriction; PMN-PT; composites; magnetodielectric; magnetoelectric;
Conference_Titel :
Applications of Ferroelectrics held jointly with 2012 European Conference on the Applications of Polar Dielectrics and 2012 International Symp Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (ISAF/ECAPD/PFM), 2012 Intl Symp
Conference_Location :
Aveiro
Print_ISBN :
978-1-4673-2668-1
DOI :
10.1109/ISAF.2012.6297850
