Measurement of the magnetic spectrum of YFeO3 by the method of submillimeter dielectric spectroscopy
Volkov A. A. , Goncharov Yu. G. , Kozlov G. V., Kocharyan K. N., Lebedev S. P., Prokhorov A. S. , Prokhorov A. M.
The spectrum of the complex magnetic permeability of antiferromagnetic material YFe03 is measured in the frequency range ν = 6-20 cm -1 with a resolution of 0.001 cm~1 in a zero external magnetic field at T= 78-600 K. The behavior of two-magnon modes, which at Τ = 300 К are situated at 10 and 17.6 cm -1 and have a width of 0.1 and 0.05 cm"1, respectively, is studied.