Artigo Acesso aberto Produção Nacional Revisado por pares

The effect of the morphology on the magnetic properties of barium hexaferrite synthesized by Pechini method

2013; Elsevier BV; Volume: 115; Linguagem: Inglês

10.1016/j.matlet.2013.10.012

ISSN

1873-4979

Autores

S.B. Galvão, Ana Catarina Lima, S.N. de Medeiros, João M. Soares, C. A. Paskocimas,

Tópico(s)

Iron oxide chemistry and applications

Resumo

Rod, platelet and ellipsoidal nanostructures of BaFe12O19 have been synthesized by the Pechini method followed by heat treatment. The produced samples were heat treated at 900 °C for different hours and characterized by X-ray diffraction, scanning electron microscopy, Mössbauer spectroscopy and vibrating sample magnetometry. The results showed that the particle size and morphology vary with the time of heat treatment. The samples consisting of nanoparticles with different morphologies exhibited plateaus in the magnetic hysteresis loops.

Referência(s)