Exchange-bias systems with compensated interfaces

Abstract:

When a ferromagnetic metal (F) is in contact with an antiferromagnet (AF), often a shift of the hysteresis loop away from its normal, symmetric position around H=O, to H<inf>E</inf>≠0 does occur. This phenomenon is known as exchange bias (EB). We put forward an analytic model, for compensated AF interfaces, based on the AF interface freezing into a metastable canted spin configuration. The EB energy is reversibly stored in a spring-like magnet, or incomplete domain wall, in the F slab. Our theory yields the right values of H<inf>E</inf> and its F thickness dependence H<inf>E</inf>∞t^-1<inf>F</inf>. It also predicts the F layer by layer magnetisation profile. © 1999 American Institute of Physics.

Año de publicación:

1999

Keywords:

Fuente:

scopus