Exchange bias up to room temperature in antiferromagnetic hexagonal Mn<sub>3</sub>Ge
Exchange bias up to room temperature in antiferromagnetic hexagonal Mn<sub>3</sub>Ge
Mn3.04Ge0.96 has a hexagonal crystal structure, which can be stabilized by high-temperature annealing, and shows antiferromagnetic order with a small ferromagnetic component of less than 0.1μB and a coercivity of 0.45 T. In the ordered phase, magnetization curves M(H) exhibit an exchange bias of 62 mT at T = 2 …