中国物理B ›› 2014, Vol. 23 ›› Issue (4): 44216-044216.doi: 10.1088/1674-1056/23/4/044216

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Magneto–optical effect of TEB30A liquid crystal doped with thulium oxides

刘桂香, 金香   

  1. Baotou Teachers College, Inner Mongolia University of Science and Technology, Baotou 014030, China
  • 收稿日期:2013-11-08 修回日期:2013-12-23 出版日期:2014-04-15 发布日期:2014-04-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 50862007), the Natural Science Foundation of Inner Mongolia Autonomous Region, China (Grant No. 20080404MS0114), and the Inner Mongolia Autonomous Region Scientific Research Fund, China (Grant No. NJZY12203).

Magneto–optical effect of TEB30A liquid crystal doped with thulium oxides

Liu Gui-Xiang (刘桂香), Jin Xiang (金香)   

  1. Baotou Teachers College, Inner Mongolia University of Science and Technology, Baotou 014030, China
  • Received:2013-11-08 Revised:2013-12-23 Online:2014-04-15 Published:2014-04-15
  • Contact: Liu Gui-Xiang E-mail:gxliuemail@126.com
  • About author:42.70.DF
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 50862007), the Natural Science Foundation of Inner Mongolia Autonomous Region, China (Grant No. 20080404MS0114), and the Inner Mongolia Autonomous Region Scientific Research Fund, China (Grant No. NJZY12203).

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摘要： The influences of an external magnetic field on the optical properties of the TEB30A nematic liquid crystal doped with thulium oxides (Gd2O3, Dy2O3, Nd2O3, Y2O3, and Sm2O3) are studied. It is shown that a magnetic field applied parallelly to the sample cell surface leads to the rotational orientation of mesogenes. All samples except for the sample doped with Sm2O3 nanoparticles undergo structural deformations. The behavior of the TEB30A/Sm2O3 differs from those of the TEB30A liquid crystal doped with other four nanoparticles. The presence of Sm2O3 nanoparticles in the TEB30A liquid crystal does not cause the structural deformation of the liquid crystal matrix. At the same time, the anchoring type of the liquid crystal molecules on the nanoparticle surface is different. The director n is parallel to the magnetic moment μ in the TEB30A/Sm2O3, and inclined to the magnetic moment μ in the TEB30A/Nd2O3, and perpendicular to the magnetic moment μ in each of TEB30A/Gd2O3, TEB30A/Dy2O3, and TEB30A/Y2O3. Besides, the dependence of the structural deformation on the critical magnetic field for the TEB30A is obtained.

关键词: magnetic field, TEB30A nematic liquid crystal, thulium oxides

Abstract: The influences of an external magnetic field on the optical properties of the TEB30A nematic liquid crystal doped with thulium oxides (Gd2O3, Dy2O3, Nd2O3, Y2O3, and Sm2O3) are studied. It is shown that a magnetic field applied parallelly to the sample cell surface leads to the rotational orientation of mesogenes. All samples except for the sample doped with Sm2O3 nanoparticles undergo structural deformations. The behavior of the TEB30A/Sm2O3 differs from those of the TEB30A liquid crystal doped with other four nanoparticles. The presence of Sm2O3 nanoparticles in the TEB30A liquid crystal does not cause the structural deformation of the liquid crystal matrix. At the same time, the anchoring type of the liquid crystal molecules on the nanoparticle surface is different. The director n is parallel to the magnetic moment μ in the TEB30A/Sm2O3, and inclined to the magnetic moment μ in the TEB30A/Nd2O3, and perpendicular to the magnetic moment μ in each of TEB30A/Gd2O3, TEB30A/Dy2O3, and TEB30A/Y2O3. Besides, the dependence of the structural deformation on the critical magnetic field for the TEB30A is obtained.

Key words: magnetic field, TEB30A nematic liquid crystal, thulium oxides

中图分类号:  (Liquid crystals)

  • 42.70.Df