Size-dependent exchange bias in single phase Mn3O4 nanoparticles
Wang Song-Wei1, 2, Zhang Xin1, 2, †, , Yao Rong1, 2, Rao Guang-Hui1, 2, ‡,
       

(a) HE verus HFC at 10 K for 30 nm, 60 nm, and 90 nm Mn3O4. (b) ME dependence of HE at 10 K.