Phase diagrams of easy-axis antiferromagnets with a Dzyaloshinskii interaction field in an inclined field

We calculate the ground state of easy-axis antiferromagnets with Dzyaloshinskiĭ interaction in a magnetic field that deviates from the easy axis. The phase diagrams of such magnetic materials are plotted in field-angle coordinates. A first-order phase transition to a weakly ferromagnetic phase is shown to occur in hematite below the Morin temperature.

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