Effect of infrared illumination on the modulated magnetic structure of the weak ferromagnet FeBO3: Mg
Аннотация
The effect of unpolarized white light on the period and conditions of the existence of the modulated magnetic structure of the FeBO3: Mg single crystal, which is formed in this easy-plane weak ferromagnet in the low-temperature range during technical magnetization, has been investigated experimentally. It has been revealed that the degree of light action on the magnetic state of the crystal depends on both the irradiation duration and the orientation of the ferromagnetic vector during illumination. It has been established that light with wavelengths in the range 0.8 μm < λ < 0.9 μm has a maximum effect on the parameters of the modulated magnetic structure formed in the FeBO3: Mg single crystal. The results obtained have been interpreted in the framework of the “magnetic ripple” theory using the model of photosensitivity of anisotropic magnetic centers associated with the presence of Mg impurity ions in the composition of the crystal.