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

(a) Training effect of EB for 60 nm Mn3O4. The first and the tenth loops at 10 K after FC in 10 kOe field are plotted. (b) The number (n) of field cycles dependence of HE and ME (open symbols). The solid symbols show the data generated from the recursive sequence in Eq. (2) as described in the text.