Magnetic field induced discontinuous spin reorientation in ErFeO_3 single crystal

摘要

The spin reorientation of ErFeO_3 that spontaneously occurs at low temperature has been previously determined to be a process involving the continuous rotation of Fe~(3+) spins. In this work, the dynamic process of spin reorientation in ErFeO_3 single crystal has been investigated by AC susceptibility measurements at various frequencies and static magnetic fields. Interestingly, two completely discontinuous steps are induced by a relatively large static magnetic field due to the variation in the magnetic anisotropy during this process. It provides deeper insights into the intriguing magnetic exchange interactions which dominate the sophisticated magnetic phase transitions in the orthoferrite systems.