Two alternative synthesis routes for MnZn ferrites using mechanochemical treatments
- Botta, Pablo Martín
- Bercoff, Paula Gabriela
- Aglietti, Esteban Fausto
- Bertorello, Hector Raul
- Porto Lopez, Jose Manuel
DOIAbstract
Two different methodologies to synthesise MnxZn1-xFe2O4 (x = 0.5, 0.65 and 0.85) are compared. In the first method, mechanochemically activated mixtures of elemental oxides were thermally treated at 1100 and 1200 °C under N2 atmosphere. In the second, previously obtained MnFe2O4 and ZnFe2O4 were well-mixed and treated at 1100 °C under N2 atmosphere. Both series of materials were characterised by X-ray diffraction (XRD), vibrating sample magnetometry (VSM), scanning electron microscopy (SEM), electron probe microanalysis and density measurements. Through a two-step processing, both methods allowed to obtain MnZn ferrites of several compositions, which exhibited high saturation magnetisations and very low coercivities. In this way, in order t...
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