Colossal intrinsic magnetoelectric effect in Pb(Fe2/3W1/3)(0.83)Ti0.17O3

Autor(es)

Fraygola, B. ^[1] ; Coelho, Adelino A. ^[2] ; Garcia, D. ^[1] ; Eiras, J. A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Fis, Grp Ceram Ferroeletr, BR-13565670 Sao Carlos, SP - Brazil

^[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Dept Fis Aplicada, Lab Preparacao & Caracterizacao Mat, BR-13083859 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Applied Physics Letters; v. 101, n. 9 AUG 27 2012.
• Citações Web of Science: 2

Resumo

Dielectric and magnetic properties were investigated in Pb(Fe2/3W1/3)(0.83)Ti0.17O3 ceramics. The dielectric constant in these samples exhibits colossal changes at the magnetic ordering temperature under the presence of bias external electric fields, which presents a close connection with magnetoelectrics effects (ME), confirming the possibility to control magnetic proprieties with electric fields. The ferroelectromagnetoelastic coefficient was determined from the dielectric response as a function of the electric field. The analysis of magnetic and dielectric susceptibilities based on the Landau-Devonshire thermodynamic formalisms indicates that the ME effects is a contribution of intrinsic ME coupling and a field dependent term. (C) 2012 American Institute of Physics. {[}http://dx.doi.org/10.1063/1.4748819] (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: 10/11187-6 - Determinação do coeficiente de acoplamento magnetoelétrico em materiais multiferróicos monofásicos
• Beneficiário: Barbara Maraston Fraygola
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado