A modified Bragg-Williams statistical model with nearest-neighbor magnetic exchange and chemical interactions and an additional Zeeman energy term has been used to predict an increase in the critical ordering temperature Torder of Fe-Co alloys in the presence of a large magnetic field Torder 20 K near equiatomic composition for H=100 T . The magnitude of the predicted Torder increases with incr...

A modified Bragg–Williams (B–W) model of a and a¢ FeCo is extended to estimate the effect of strong magnetic fields on the critical ordering temperature (TORDER) taking into account longrange chemical and magnetic ordering. The model discussed here is generalized from our previous work in which only the larger average exchange per atom in the chemically ordered state was taken into account. A p...