Magnetic field induced spin reorientation transition in NdFeO3 investigated with THz time-domain spectroscopy

摘要

Magnetic field and temperature dependence of spin wave excitation and manipulation in RFeO (R=Nd) are studied with THz time-domain spectroscopy. Our studies reveal that the spin reorientation transition triggered by external magnetic field is strongly anisotropic: magnetic fields along a-axis is much easier to switch the spin alignment than that along c-axis in NdFeO3 crystal.