Relationship between the ferromagnetic phase and the magnetoelectric coupling in hot pressed Pb(Mg1/3Nb2/3)O-3-PbTiO3 based particulate composites

Autor(es)

Zabotto, F. L. ; Paranhos, Rafael R. G. ; Jain, Menka ; Gualdi, A. J. ; Oliveira, A. J. A. ; Eiras, J. A. ; Garcia, D.

• Tipo de documento: Artigo Científico
• Fonte: Integrated Ferroelectrics; v. 174, n. 1, p. 11-pg., 2016-01-01.

Resumo

The influence of ferromagnetic phase properties on the magnetoelectric response of hot pressed particulate composites formed by 80mol% of 0.675[Pb(Mg1/3Nb2/3)O-3]-0.325[PbTiO3] as piezoelectric matrix and 20mol% of NiFe2O4, CoFe2O4 or BaFe12O19 phases was analyzed. The hot pressing sintering method was suitable for obtaining composites with apparent density higher than 94% and electric resistivity close to 10(9) .m, independently of the ferromagnetic phases used. The magnitude of the magnetoelectric coupling seems to be governed by the piezoelectric properties of ferroelectric PMN-PT matrix, and the zero bias magnetoelectric coefficient values are determined by the ferromagnetic hardness of the magnetic phase. (AU)

• Processo FAPESP: 08/04025-0 - Materiais multifuncionais multiferróicos nanoestruturados: síntese, propriedades, fenomenologia e aplicações
• Beneficiário: José Antonio Eiras
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 10/07518-7 - Efeito de tamanho no acoplamento magnetoelétrico em materiais multiferróicos compósitos nanoestruturados
• Beneficiário: Fabio Luis Zabotto
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado