Evolution of the magnetic properties during the thermal treatment of barium hexaferrite precursors obtained by coprecipitation from barium ferrate (VI) solutions

The evolution of macroscopic magnetic properties of BaFe12O19 synthesized by a new chemical coprecipitation method are presented and discussed. Structural and magnetic properties were investigated by X-ray diffraction, scanning electronic microscopy and magnetic measurements on fine particles result...

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Detalles Bibliográficos
Autores principales: Jacobo, S.E., Civale, L., Blesa, M.A.
Formato: JOUR
Materias:
Barium ferrites
Barium hexaferrites
Hard magnetic materials
Magnetic properties
Magnetism
Annealing
Magnetic variables measurement
Magnetization
Scanning electron microscopy
Synthesis (chemical)
X ray diffraction
Precursors
Barium compounds
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03048853_v260_n1-2_p37_Jacobo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:The evolution of macroscopic magnetic properties of BaFe12O19 synthesized by a new chemical coprecipitation method are presented and discussed. Structural and magnetic properties were investigated by X-ray diffraction, scanning electronic microscopy and magnetic measurements on fine particles resulting from annealing treatments. High values of coercive field (4.4 kOe) and of the magnetization (70 emug-1) were obtained on well-crystallized BaFe12O19 particles annealed at 800°C. © 2001 Elsevier Science B.V. All rights reserved.

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