Synthesis and high-frequency magnetoelectric characterization of the 0-3 particulate lead-free multiferroic composite KNN/CFO

Autor(es)

Gualdi, Alexandre Jose ; Batacline, Leonardo Dos Santos ; Santo, Gustavo Correia Espirito ; Alkathy, Mahmoud S. ; Zabotto, Fabio Luis

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHYSICS-CONDENSED MATTER; v. 36, n. 33, p. 7-pg., 2024-08-21.

Resumo

The research for lead-free magnetoelectric (ME) multiferroic composite materials has increased considerably because they are environmentally friendly. For composites with 0-3 connectivity, synthesis with lead-free phase has proven challenging to obtain high values of ME coupling. This work reports the successful synthesis of the KNN/CFO composite (K0.5N0.5NbO3/CoFe2O4) by conventional synthesis process. XRD and SEI showed two well-defined, also presenting good electric polarization values. The ME coefficient was very high, reaching values close to 2850 mV cm-1<middle dot>Oe at the electromechanical resonance frequency. The dipolar interaction between the electric charges and magnetic moments of the KNN and CFO phases was responsible for the high value and the behavior of dependence on the applied magnetic field. (AU)

• Processo FAPESP: 19/24603-2 - Estudo do acoplamento magnetoelétrico em altas frequências de compósitos multiferróicos
• Beneficiário: Alexandre José Gualdi
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 23/05716-6 - Síntese e Caracterização de Materiais Ferroelétricos e Multiferroicos para Aplicações em Armazenamento e Conversores de Energia (Mecânica e Fotovoltaica)"
• Beneficiário: Mahmoud Saleh Mohammed Alkathy
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico
• Processo FAPESP: 17/13769-1 - Materiais multiferróicos e ferroelétricos para conversores de energia: síntese, propriedades, fenomenologia e aplicações
• Beneficiário: José Antonio Eiras
• Modalidade de apoio: Auxílio à Pesquisa - Temático