An investigation on the magneto-optic properties of terbium gallium garnet under high magnetic field |
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| Authors: | Yang Guo Zhang Guo-Ying Gao Jiao Xue Liu-Ping Xia Tian and Zhang Xue-Long |
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| Affiliation: | Department of Physics, College of Science, China University of Mining and Technology, Xuzhou 221008, China;Department of Physics, College of Science, China University of Mining and Technology, Xuzhou 221008, China;Department of Physics, College of Science, China University of Mining and Technology, Xuzhou 221008, China;Department of Physics, College of Science, China University of Mining and Technology, Xuzhou 221008, China;College of Medical Mechanism, Shanghai University of Science and Technology, Shanghai 200093, China;College of Medical Mechanism, Shanghai University of Science and Technology, Shanghai 200093, China |
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| Abstract: | The superexchange interaction on a magnetic ion may be represented by an effective field Hm = λM in some paramagnetic materials, here λ is the coefficient of effective field and M = χHe with χ being the magnetic susceptibility and He being the applied field. The variation of the equivalent λχ with the dynamic applied field is given and the crystal field-splitting levels of the excited configuration 4f75d1 of the Tb3+ ion are calculated in the Tb3Ga5O12. By means of the effective field Hm and the applied field He, the Faraday rotation of Tb3Ga5O12 at 6 K and 41 K, under the high magnetic field and at 0.63 μm wavelength, are presented. Our calculated results are in agreement with the experimental data. |
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| Keywords: | terbium gallium garnet high applied field superexchange interaction magneto-optical properties |
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