Magnetoionic control of perpendicular exchange bias

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...

Pinned synthetic ferrimagnets with perpendicular anisotropy and tuneable exchange bias

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...

Perpendicular exchange bias and its control by magnetic, stress and electric fields

Perpendicular exchange bias (PEB) involving perpendicular magnetic anisotropy (PMA) in both the antiferromagnetic (AF) pinning and the ferromagnetic (FM) sensor layer is expected to become important in future perpendicular recording and sensing devices. Further, because of the reduced spin dimensionality, PEB promises to be easier understandable than the conventional planar exchange bias (EB). ...

Extrinsic control of the exchange bias

A new control mechanism for the exchange bias effect in magnetic heterostructures is proposed. It takes advantage of the magnetoelectric effect which takes place in the antiferromagnetic pinning layer. In contrast with the pioneering AC measurements of the magnetoelectric effect, we investigate the magnetic response of the prototypical magnetoelectric compound Cr2O3 on static electric fields. T...