Title :
Intrinsic magnetoelectric coupling in PFW-PT solid solutions
Author :
Fraygola, B. ; Eiras, J.A.
Author_Institution :
Depto de Fis., Univ. Fed. de Sao Carlos, Sao Carlos, Brazil
Abstract :
Multiferroic solid solutions between Pb(Fe2/3W1/3)O3 (PFW) and PbTiO3 (PT) [PFW-PT] have been characterized by anelastic measurements. Anomalies in the temperature dependence of the elastic constants have been observed at TN and TC for all samples, indicating that the magnetoelectric coupling (ME) between the ferroelectric and antiferromagnetic orders occurs “via strain”. A numerical approximation for the ME coefficients was obtained from the eletroelastic and magnetoelastic coefficients and the values of electric and magnetic susceptibility. These coefficients are greater the closer the temperatures of AFM and FE orders are with each other.
Keywords :
anelasticity; antiferromagnetic materials; elastic constants; ferroelectric materials; ferroelectricity; lead compounds; magnetic susceptibility; magnetoelectric effects; solid solutions; PFW-PT solid solutions; Pb(Fe0.67W0.33)O3-PbTiO3; anelastic measurements; antiferromagnetic ordering; elastic constants; eletroelastic coefficients; ferroelectric ordering; intrinsic magnetoelectric coupling; magnetic susceptibility; magnetoelastic coefficients; multiferroic solid solutions; numerical approximation; temperature dependence; Couplings; Iron; Magnetic susceptibility; Magnetoelasticity; Magnetoelectric effects; Materials; Strain; Intrinsic Magnetoelectric coupling; Multiferroics; PFW; anelastic properties;
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.2012.6297821
