Session D40 - Poster Session I.
POSTER session, Monday afternoon, March 12
Exhibit Hall, Washington State Convention Center
The induced piezoelectricity and magnetic properties of the (1-x)Pb(Mg_1/3Nb_2/3)O_3-xPb(Fe_1/2Nb_1/2)O_3, ((1-x)PMN-xPFN, x= 0.1, 0.2, 0.3, 0.4, 1) ferroelectromagnetic ceramics have been investigated. The effect of the variation of Fe content on the electromechanical properties of the ceramic is analyzed observing that the electromechanical efficiency decreases when either the applied external electric field is increased or the concentration of the ferroactive Fe cation is decreased. The dependence of the magnetic characteristics such as the specific magnetization (\sigma) and magnetic susceptibility (\chi) were investigated using thermo-magnetic analysis. The magnetic behavior obeys a weak ferromagnetism law. A regular decrease of the \sigma and \chi values as the amount of Fe in the (1-x)PMN-xPFN is decreased is observed. A study of the influence of the Fe cations on the dielectric and magnetic properties is used to analyze the coupling between the ferroelectric and the antiferromagnetic order in the ceramic.