EB in multiferroic NPs

Exchange bias in BiFe0.8Mn0.2O3 nanoparticles with an antiferromagnetic core and a diluted antiferromagnetic shell.
P. K. Manna and S. M. Yusuf, R. Shukla and A. K. Tyagi
Phys. Rev. B 83, 184412 (2011)

(a) ZFC and FC under 1-T cooling field curves at 5K, (b) Same as (a) under
5-T cooling field, (c) Cooling field dependence of the horizontal (Heb) and vertical (Meb) loop shifts.