中国物理B ›› 2011, Vol. 20 ›› Issue (1): 17802-017802.doi: 10.1088/1674-1056/20/1/017802

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An investigation on the magneto-optic properties of terbium gallium garnet under high magnetic field

夏天1, 张学龙1, 杨国2, 张国营2, 高娇2, 薛刘萍2   

  1. (1)College of Medical Mechanism, Shanghai University of Science and Technology, Shanghai 200093, China; (2)Department of Physics, College of Science, China University of Mining and Technology, Xuzhou 221008, China
  • 收稿日期:2010-01-19 修回日期:2010-04-09 出版日期:2011-01-15 发布日期:2011-01-15
  • 基金资助:
    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).

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)   

  1. 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
  • Received:2010-01-19 Revised:2010-04-09 Online:2011-01-15 Published:2011-01-15
  • Supported by:
    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).

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摘要： 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.

关键词: terbium gallium garnet, high applied field, superexchange interaction, magneto-optical properties

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.

Key words: terbium gallium garnet, high applied field, superexchange interaction, magneto-optical properties

中图分类号:  (Magneto-optical effects)

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