Assymetric hysteresis loops in EB core/shell NPs

Asymmetric hysteresis loops and its dependence on magnetic anisotropy in exchange biased Co/CoO core-shell nanoparticles.
Sayan Chandra, Hafsa Khurshid, Manh-Huong Phan, and Hariharan Srikanth
Appl. Phys. Lett. 101, 232405 (2012)

(a) and (b) Bipolar TS scan at 20K and 130K under FC condition indicatingthe anisotropy fields and g, (c) temperature dependence of g, (d) temperature dependence of shift in the first anisotropy peaks in the bipolar scans.