A joint publication with Helen Gomonay about antiferromagnetic hysteresis above the spin flop field has been published in Physical Review B.
They demonstrate that external magnetic fields change the magnetic anisotropy in the antiferromagnet CoO. THis is shown by measuring hysteresis curves for magnetic fields higher than the spin flop field. This behavior is shown to agree with the presence of the unquenched orbital momentum, which can play an important role in antiferromagnetic spintronics.
You can find the publication under PhysRevB.107.L060403.