Antiferromagnetic and Ferroelectric Phase Transitions and Instabilities in PFW-PT Multiferroic Solid Solution Characterized by Anelastic Measurement

Autor(es)

Fraygola, Barbara ^[1] ; Eiras, Jose A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Depto Fis, GCFerr, BR-13560 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Ferroelectrics; v. 448, n. 1, p. 86-95, JAN 1 2013.
• Citações Web of Science: 1

Resumo

Magnetic, electric and mechanical behaviors are strongly coupled, but only a few models are able to describe electro-magneto-mechanical coupling effects. In this work, multiferroic solid solutions between Pb(Fe2/3W1/3)O-3 (PFW) and PbTiO3 (PT) {[}PFW-PT] have been characterized by anelastic measurements. Anomalies in the temperature dependence of the elastic constants have been observed at T-N and T-C for all samples, indicating that the magnetoelectric coupling (ME) between the ferroelectric and antiferromagnetic orders occurs via strain. A phase diagram was established, comparing magnetic and dielectric measurements. (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