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Impulsive excitation of terahertz magnetic field induces spin precession motions and the spin dynamics are probed. The results of temperature dependence in ErCrO3 and enhancement of spin precession amplitudes using metamaterial in ErFeO3 is reported.
We performed terahertz time domain spectroscopy on erbium orthoferrite. The spin reorientation transition was observed as switching of magnetic radiation mode between F and AF mode, and the change in the polarization of the radiation.
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