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VOLUME 27 (1978) | ISSUE 1 | PAGE 20
Long-wave IR spectrum of CoCO3 - high-frequency mode of antiferromagnetic resonance (AFMR) and two-magnon absorption
For the first time ever, we have observed in C0CO3 a high-frequency AFMR mode and two-magnon absorption, and we have measured the shift of the two-magnon absorption line in the magnetic field Я. For a satisfactory description of the AFMR it is necessary to calculate the frequencies accurate to terms of second order in H.