Reversible processes in magnetization reversal of co-precipitated cobalt ferrite

Observation of the exchange spring behavior in hard–soft-ferrite nanocomposite

“…With this novel technique we were successful in demonstrating the concept of exchange spring behavior in Ni-Zn/barium ferrite composite by properly engineering the microstructure. The typical domain wall width for a soft and a hard ferrite are approximately 25 and 9 nm [13,14]. The composites were heat treated at two different temperatures to find the difference in the magnetic property that occurs when treated at two different temperatures as well as the effect of exchange energy term between soft and hard grain with their grain size.…”

Study of magnetization reversal in hybrid magnets

“…If the nucleation and unpinning of inverse domains are the basis of the mechanism in magnetization reversal, the M rev (M irr ) H i curves will exhibit a minimum during the demagnetization process [4,5]. This method was previously used to study magnetization reversal in magnetically hard SmCo films [7] and cobalt ferrite powders [8].…”