Topology of phase diagrams in spin-flip phase transitions and the antiferromagnetic resonance in dysprosium and yttrium orthoferrites
Balbashov A. M., Berezin A. G., Gufan Yu. M., Kolyadko G. S., Marchukov P. Yu., Nikolaev I. V., Rudashevskii E. G.
A replacement of a rare-earth dysprosium ion by an yttrium ion in orthoferrite changes the combination sign of the "second" constants of the anisotropy if the signs of the "first" constants are the same. As a result, the topology of the phase diagram changes due to a magnetic-field-induced spin flip.