FARADAY-EFFECT IN YTTRIUM ORTHOFERRITE IN THE RANGE 1280-1600 NM

Wavelength dispersion of Faraday rotation in yttrium orthoferrite in the range 1280-1600 nm has been determined. At a wavelength of 1330 nm, the dependence of Faraday rotation, measured along the optical axis, on the angle phi between the polarization of the incident light and the crystallographic a-axis was investigated. For a 1.27 mm thick sample the algebraic difference of rotations of opposite signs reaches a maximum at phi = 70 degrees. Rotations in opposite directions differ by their absolute values. Directions of polarization, corresponding to a maximum or minimum of transmittance of the sample do not coincide with the direction of crystallographic axis and depend on the sign of magnetization.