Abstract
Optical and magneto-optical properties of the La0.65Ba0.35MnO3/SrTiO3(001) thin film with CMR and the paramagnetic-to-ferromagnetic transition at T = 310 K have been investigated in the infrared spectral range. It is shown that magnetotransmission and magnetoreflection of unpolarized light in the film reach up to 10 % at the magnetic field of 4kOe. The possible physical mechanisms responsible for negative magnetotransmission and positive magnetoreflection in the mid-infrared range are interpreted in the framework of the theory of magnetorefractive effect in manganites. High optical response of the La0.65Ba0.35MnO3 film to an external magnetic field (up to ∼ 25 %/kOe in the magnetoreflection) could be used in the design of optical magnetic field sensor, switches and modulators.
Published Version
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