Low-frequency resonance of domain walls in the iron garnet Tb3Fe5O12 near the magnetic compensation point
B. Yu. SokolovOuloug-Beg National University of Uzbekistan, ul. Ulugbeka, Tashkent, 700174, UzbekistanM.Z. SharipovOuloug-Beg National University of Uzbekistan, ul. Ulugbeka, Tashkent, 700174, Uzbekistan
ABI
Аннотация
The vibrational motion dynamics of domain walls (DWs) in the iron garnet Tb3Fe5O12, a low-frequency magnetic field, and the temperature range 200–295 K (which includes the magnetic compensation point of this ferrimagnet, T c ≈ 249 K) is studied by a magnetooptical method. The temperature dependence of the DW vibration amplitude in this garnet crystal near T c has a resonance character. A theoretical model of the magnetic resonance of DWs is proposed to interpret the obtained experimental results; according to this model, the DW mass tends to infinity and the resonance frequency tends to zero when temperature approaches the magnetic compensation point.
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