The Influence of Domain Structure on the Faraday Effect in Terbium Garnet Ferrite in the Vicinity of the Magnetic-Compensation Temperature
2013
The temperature dependence of the Faraday effect in terbium garnet ferrite, Tb3Fe5O12, is investigated near its magnetic-compensation temperature, Т
с
= 249 K. A non-monotonous variation in the value of the Faraday rotation angle Ф is observed in a weak magnetic field as the temperature approaches Т
с
: the temperature plot of the Faraday rotation angle has two local maxima observed left and right of the magnetic compensation point. A theoretical model is proposed, which follows from the phenomenological theory of domain-boundary displacement under the action of a magnetic field, offering an unambiguous description of the principles of domain-structure influence on the Faraday effect in Tb3Fe5O12 near Т
с
.
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