Two-Magnon Ferrimagnetic Resonance Linewidth of Hexagonal Ferrite Zn_2Y

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概要

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• The linewidth of resonance absorption of microwave power in a hexagonal ferrite, Zn_2Y, induced by surface imperfections is discussed on the basis of two-magnon relaxation mechanism. Two maxima of the linewidth observed when direction angle θ_H of the applied dc field with respect to the crystal-lographic c axis is changed are analyzed by a theoretical calculation. It is predicted from the theory that the angular position θ_<HB> corresponding to the maximum at small angle is independent of the size of surface imperfections and θ_<HB> to the other maximum is dependent on the size of surface imperfections. These results well coincide with the experimental results. Some information about an effective exchange constant and a parameter in scattering Hamiltonian are also obtained.

• 社団法人日本物理学会の論文
• 1968-04-05

著者

• MITA Masaru

  Department of Physics,Faculty of Science and Technology,Science University of Tokyo

• Mita Masaru

  Department Of Physics Faculty Of Science And Technology Science University Of Tokyo

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