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Numerical calculation of Kerr spectra for MnBi magnetic multilayered films

Lin Ying-Bin Lai Heng Huang Zhi-Gao Du You-Wei

Numerical calculation of Kerr spectra for MnBi magnetic multilayered films

Lin Ying-Bin, Lai Heng, Huang Zhi-Gao, Du You-Wei
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  • Abstract views:  6520
  • PDF Downloads:  759
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Publishing process
  • Received Date:  17 February 2003
  • Accepted Date:  21 May 2003
  • Published Online:  16 February 2004

Numerical calculation of Kerr spectra for MnBi magnetic multilayered films

  • 1. (1)福建师范大学物理系,激光所,福州 350007; (2)福建师范大学物理系,激光所,福州 350007;南京大学固体微结构国家重点实验室,南京 210093; (3)南京大学固体微结构国家重点实验室,南京 210093

Abstract: Based on the theory of propagating electromagnetic plane waves in homogenous anisotropic media and 4×4 matrix method, the Kerr spectra for the MnBi multilayered films as a function of wavelength, incident angle and layer number are simulated. It is found that the calculated Kerr spectra as a function of wavelength are in good agreement with the experimental ones for MnBi,Mn0.53Bi0.47,Mn0.52Bi0.44Sb0.04. In addition, the Kerr spectra as a function of incident angle and layer number for the MnBi multilayered films are simulated. The calculated results indicate that the magnetic layer number and incident angle greatly affect the Kerr spectra. A maximum Kerr rotation exists at some thickness of the magnetic film as the wavelength of the incident light is normal. Also, a maximum rotation is found in the simulated Kerr rotation as a function of incident angle at a fixed thickness of magnetic layer. These simulated results is important for the design of the materials.

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