Reversible processes in magnetization reversal of co-precipitated cobalt ferrite

• Published in: Journal of magnetism and magnetic materials Vol. 254; pp. 219 - 221
• Main Authors: Medina-Boudri, A, Cornejo, D.R, Ayala, O, Bertorello, H.R, Matutes-Aquino, J
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2003
• Subjects: Cobalt ferrite; Magnetization reversal; Reversible and irreversible magnetization; Magnetization reversal; Reversible and irreversible magnetization; Cobalt ferrite
• ISSN: 0304-8853
• DOI: 10.1016/S0304-8853(02)00770-9

A study of the magnetization reversal process in a co-precipitated cobalt ferrite material at 300 K was carried out. The evolution of the reversible M rev and irreversible M irr magnetization components were determined by measuring sets of recoil curves from different points on the initial magnetization curve and demagnetization curve. From these data, M rev( M irr) H i curves were built, being H i the internal field of the sample. The interrelation function η=( M rev/ M irr) H i was determined as well. The results suggest that domain wall movement subject to pinning is the dominant mechanism for the reversal magnetization process in this material.