| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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An investigation on the magneto-optic properties of terbium gallium garnet under high magnetic field |
| Yang Guo(杨国)a), Zhang Guo-Ying(张国营) a)†, Gao Jiao(高娇)a), Xue Liu-Ping(薛刘萍)a), Xia Tian(夏天)b), and Zhang Xue-Long(张学龙)b) |
| a Department of Physics, College of Science, China University of Mining and Technology, Xuzhou 221008, China; b 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 = $\lambda$M in some paramagnetic materials, here λ is the coefficient of effective field and M = $\chi$He with $\chi$ being the magnetic susceptibility and He being the applied field. The variation of the equivalent $\lambda_{\chi}$ 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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Received: 19 January 2010
Revised: 09 April 2010
Accepted manuscript online:
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PACS:
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78.20.Ls
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(Magneto-optical effects)
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| Fund: Project supported by the Fundamental Research Funds for the Central Universities (Grant No. 2010LKWL07) and the National Basic Research Program of China (Grant No. 2010CB226805). |
Cite this article:
Yang Guo(杨国), Zhang Guo-Ying(张国营), Gao Jiao(高娇), Xue Liu-Ping(薛刘萍), Xia Tian(夏天), and Zhang Xue-Long(张学龙) An investigation on the magneto-optic properties of terbium gallium garnet under high magnetic field 2011 Chin. Phys. B 20 017802
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