Sr ferrite-MQP hybrid bonded magnets
by D. Bueno-Baques, D.R. Cornejo, E. Padron-Hernandez, P. Sifuentes Gallardo, O. Rodriguez Fernandez, J.A. Matutes-Aquino
International Journal of Materials and Product Technology (IJMPT), Vol. 27, No. 1/2, 2006

Abstract: A magnetic interaction and magnetisation reversal study at room temperature in hybrid magnets of strontium ferrite and Magnequench MQP-Q alloy were carried out. The evolution of the DCD reversible (M_rev) and irreversible (M_irr) magnetisation components during the magnetisation and the demagnetisation processes was determined. M_rev(M_irr)_Hi curves were built, being Hi the internal field of the sample. The experimental behaviour of the M_rev(M_irr)_Hi curves suggests the existence of a complex non-uniform mechanism for the magnetisation reversal in these materials. Henkel plots showed a notable predominance of the demagnetising-like magnetostatic interactions. Moving Preisach parameter k_m was determined. k_m is found to be a function of Hi. The behaviour of this function is discussed.

Online publication date: Wed, 16-Aug-2006

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