Mechanosynthesis and magnetic characterization of nanocrystalline manganese ferrites

Manganese ferrites, MnFe 2 O 4±δ , synthesized via mechanosynthesis from different manganese sources, MnO, Mn 2 O 3 and MnO 2 , and mixed with Fe 2 O 3 , were studied. XRD, SEM and magnetometry were used to characterize the synthesized powders. The MnFe 2 O 4 spinel phase appeared after 12 h of mill...

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Veröffentlicht in:	Journal of materials science. Materials in electronics 2011-08, Vol.22 (8), p.1046-1052
Hauptverfasser:	Bolarín-Miró, Ana M., Vera-Serna, Pedro, Sánchez-De Jesús, Félix, Cortés-Escobedo, Claudia A., Martínez-Luevanos, Antonia
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Characterization and Evaluation of Materials Chemistry and Materials Science Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Deltas Domain effects, magnetization curves, and hysteresis Electronics Exact sciences and technology Ferrites Instruments, apparatus, components and techniques common to several branches of physics and astronomy Magnetic properties and materials Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects Manganese Materials Science Materials synthesis materials processing Metals. Metallurgy Nanocrystals Optical and Electronic Materials Physics Powder metallurgy. Composite materials Precursors Production techniques Saturation Saturation (magnetic) Scanning probe microscopes, components and techniques Spinel Technology
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Zusammenfassung:	Manganese ferrites, MnFe 2 O 4±δ , synthesized via mechanosynthesis from different manganese sources, MnO, Mn 2 O 3 and MnO 2 , and mixed with Fe 2 O 3 , were studied. XRD, SEM and magnetometry were used to characterize the synthesized powders. The MnFe 2 O 4 spinel phase appeared after 12 h of milling when MnO and MnO 2 mixed with Fe 2 O 3 were used as the precursors and showed the maximum saturation magnetization value (49.77 emu/g). Manganese ferrite did not form when MnO 2 was used. Manganese ferrite obtained from Mn 2 O 3 showed the lowest saturation magnetization value. An increase in the milling time promoted the increase in the saturation magnetization values.
ISSN:	0957-4522 1573-482X
DOI:	10.1007/s10854-010-0257-x