Higher-order exchange interactions leading to metamagnetism in FeRh
Higher-order exchange interactions leading to metamagnetism in FeRh
The origin of the metamagnetic antiferromagnetic-ferromagnetic phase transition of FeRh is a subject of much debate. Competing explanations invoke magnetovolume effects and purely ther- modynamic transitions within the spin system. It is experimentally difficult to observe the changes in the magnetic system and the lattice simultaneously, leading to differing conclusions …