Nature of the magnetoelectric coupling in multiferroic Pb(Fe(1/2)Nb(1/2))O(3) ceramics

Nenhuma Miniatura disponível
Data
2008-08-01
Autores
Lente, M. H.
Guerra, J. D. S.
Souza, G. K. S. de
Fraygola, B. M.
Raigoza, C. F. V.
Garcia, D.
Eiras, J. A.
Orientadores
Tipo
Artigo
Título da Revista
ISSN da Revista
Título de Volume
Resumo
In this work, electrical permittivity measurements in lead iron niobate (PFN) ceramics were performed in the frequency and temperature ranges from 10 kHz to 1.2 GHz and from 15 to 450 K, respectively. the microwave dielectric results characterized unambiguously the magnetoelectric effect in PFN and demonstrated that the nature of such coupling arises indirectly via ferroelastic contribution rather than a direct coupling between electrical and magnetic order parameters. Moreover, it was also verified that such coupling can be enhanced or suppressed depending on the relative orientation between the probing electric field and the macroscopic ferroelectric polarization.
Descrição
Citação
Physical Review B. College Pk: Amer Physical Soc, v. 78, n. 5, 6 p., 2008.
Coleções