Investigation of the thermal stability of Mn ferrite particles synthesized by a modified co-precipitation method
Manganese ferrite particles with spinel structure were synthesized by a modified co-precipitation method, and then the thermal stability on their structural and magnetic properties was investigated by thermal annealing at different gas ambients. Experi- mental results showed that decomposition of me...
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Veröffentlicht in: | 中国科学:化学英文版 2013 (3), p.568-572 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Manganese ferrite particles with spinel structure were synthesized by a modified co-precipitation method, and then the thermal stability on their structural and magnetic properties was investigated by thermal annealing at different gas ambients. Experi- mental results showed that decomposition of metal oxides occurred when Mn ferrite particles with spinel structure were an- nealed under air ambient, while samples annealed in vacuum or argon remained in the spinel structural form. The highest satu- ration magnetization value of 58 emu/g was obtained when the sample was annealed at 400℃ in argon. The result showed that the thermal stability of MnFe2O4 was better under Ar ambient conditions or in vacuum. |
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ISSN: | 1674-7291 1869-1870 |