Helical-to-Fan Transitions under Magnetic Fields in the Noncentrosymmetric Tetragonal Magnet EuRhGe 3
The study investigates how magnetic structures in EuRhGe3 change when an external magnetic field is applied, observing a sequence of transitions from a circular helix to an elliptic conical (xyz-fan) state and finally to a planar xy-fan structure. This provides a model for helimagnets showing full field-induced phase evolution.