Estudos das propriedades magnéticas e caracterização estrutural da hexaferrita de estrôncio com substituição de Fe2O3 por Mn2O3

• Ano de defesa: 2017
• Autor(a) principal: Nasser, Hanilton Marana
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Tecnológica Federal do Paraná; Cornelio Procopio; Brasil; Programa de Pós-Graduação em Engenharia Mecânica; UTFPR
• Palavras-chave em Português: Cristais - Propriedades magnéticas; Raios X - Difração; Crystals - Magnetic properties; X-rays - Diffraction; CNPQ::ENGENHARIAS; Engenharia Mecânica
• Link de acesso: http://repositorio.utfpr.edu.br/jspui/handle/1/4548

The present work is aimed at the synthesis, structural and magnetic characterization of strontium hexaferrite (SrFe12O19), besides demonstrating variation in the magnetic properties generated by the substitution of Fe3+ cation by the Mn3+ cation. The samples were obtained by the solid-state process and calcined at 1200 ° C for 4 hours and were performed by the following chemical formula: SrFe12-xMnxO19 (0 ≤ X ≤ 5). The characterization was performed by the X-ray diffraction process, and the magnetic properties were demonstrated by magnetic hysteresis tests by the Vibrant Sample Magnetometer principle. The different concentrations of Mn3+ resulted from significant variation in both the network parameters and the magnetic properties.