Tuning the Effective Anisotropy in a Voltage-Susceptible Exchange-Bias Heterosystem

Exchange Bias in FeF20-CoPt heterosystems with perpendicular anisotropy

The exchange bias e!ect is measured in heterosystems with perpendicular anisotropy consisting of Co/Pt multilayers on top of the (0 0 1) face of a FeF single crystal. The resulting exchange "eld H exhibits a strong dependence on temperature and the axial freezing "eld, H . Within the framework of an Ising-type model, the H vs. 1 as well as the H vs.H data are explained in terms of the microscop...

Perpendicular exchange bias and magnetic anisotropy in CoOÕpermalloy multilayers

S. M. Zhou, L. Sun, P. C. Searson, and C. L. Chien Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA Surface Physics Laboratory (State Key Laboratory) and Department of Physics, Fudan University, Shanghai 200433, China Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA ~Received 18 August 2003; pu...

Tailoring the exchange bias via shape anisotropy in ferromagneticÕantiferromagnetic exchange-coupled systems

The magnetic behavior of Fe lines on top of a continuous FeF 2 antiferromagnetic layer was investigated as a function of the orientation of the lines with respect to the applied magnetic field and a unidirectional anisotropy established by field cooling. The orientational dependence of the asymmetric loop shift, called exchange bias, shows that the competition between shape and unidirectional a...

Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias

Freezing field dependance of the exchange bias in uniaxial FeF2-CoPt heterosystems with perpendicular anisotropy

The exchange bias e!ect is measured for the "rst time in FeF 2 }CoPt heterosystems with perpendicular anisotropy. The exchange "eld exhibits a strong dependence on the axial freezing "eld. This behavior is explained in terms of the microscopic spin structure at the interface, which is established on cooling to below 1 N . We calculate the dependence of the spin structure on the freezing "eld wi...