Ferroic properties of 0.675 Pb(Mg1/3Nb2/3)O-3 -0.325 PbTiO3 /CoFe2O4 prepared by spark plasma sintering

Integrated Ferroelectrics Volume: 174 Issue: 1 Pages: 138-145 Published: 2016

SEE PDF Full Length Article

Writers: D. S. F. Viana, F. P. Milton, K. R. C. P. Jimenez, A. J. Gualdi, P. C. Camargo, A. J. A. de Oliveira, J. A. Eiras, A. Bhalla, R. Guo & D. Garcia

Keywords: Magnetoelectric effectmagnetoelectric compositesSpark Plasma Sintering

Abstract: This paper reports the electric, magnetic and magnetoelectric properties of particulate composites of the system with ferroelectric phase 0.675[Pb(Mg1/3Nb2/3)O3]−0.325[PbTiO3] and magnetic phase CoFe2O4 prepared by Spark Plasma Sintering technique. Optimized sintering and thermal annealing parameters were applied in order to achieve highly dense microstructure with sub micrometric grain size distribution for both phases. The results from the dielectric measurements showed a diffuse and dispersive phase transition. P-E and M-H loops revealed the simultaneous existence of ferroelectric and ferrimagnetic ordering, respectively. Moreover, at cryogenic temperatures an anomalous behavior on the bias magnetic field dependence was observed for the magnetoelectric voltage coefficient.

Centro de Desenvolvimento de Materiais Funcionais
Sobre Centro de Desenvolvimento de Materiais Funcionais 140 Artigos
O CDMF é um dos Centros de Pesquisa, Inovação e Difusão (CEPID) apoiados pela FAPESP. O Centro também recebe investimento do CNPq, a partir do Instituto Nacional de Ciência e Tecnologia dos Materiais em Nanotecnologia (INCTMN).