Intrinsic features of the magnetoeletric coupling mechanism in displacive multiferroics

Autor(es)

Freitas, V. F. ^[1] ; Montanher, D. Z. ^[1] ; Bonadio, T. G. M. ^[1] ; Mazzocchi, V. L. ^[2] ; Mestnik-Filho, J. ^[2] ; Parente, C. B. R. ^[2] ; Garcia, D. ^[3] ; Eiras, J. A. ^[3] ; Cotica, L. F. ^{[1, 4]} ; Santos, I. A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Maringa, Dept Phys, BR-87020900 Maringa, Parana - Brazil

^[2] Inst Pesquisas Energet & Nucl IPEN CNEN SP, BR-11049 Sao Paulo - Brazil

^[3] Univ Fed Sao Carlos, Dept Phys, BR-13565905 Sao Paulo - Brazil

^[4] Univ Texas San Antonio, Dept Elect & Comp Engn, San Antonio, TX 78249 - USA

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Physics; v. 114, n. 13 OCT 7 2013.
• Citações Web of Science: 6

Resumo

Structural, ferroelectric, and magnetic arrangements, and electron density in the vicinity of cations, were modeled from high-resolution X-ray and neutron powder diffraction data in La modified BiFeO3-PbTiO3 compounds. Important features for controlling the intrinsic mechanism for the magnetoelectric coupling in these materials, as prototypes for perovskite structured magnetoelectric multiferroics, are pointed out and discussed. It is shown that the magnetoelectric coupling angle is governed by covalent-like forces, which also affect the structural and ferroelectric distortions in the unit cell. (C) 2013 AIP Publishing LLC. (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