Experimental and theoretical interpretation of magnetic ground state of FeMnO3

Ferrimagnetic configurations considered to obtain the Fe-Mn (FiM-1), Mn-Mn (FiM-2) and Mn-Fe (FiM-3) exchange coupling constants in FeMnO3 material. Purple, orange and red balls correspond to Mn, Fe and O atoms; respectively. Red and Black vectors represent spin up and down, respectively.484