Excitation of Forward Volume Magnetostatic Waves
by a Uniform High-frequency Magnetic Field

G. A. Shmatov

Institute of Metal Physics, Ural Division, Russian Academy of Sciences,
ul. S. Kovalevskoi 18, Ekaterinburg, 620219 Russia

Received May 31, 1996; in final form, July 8, 1996

Abstract—The paper discusses the excitation of forward volume magnetostatic waves by a uniform high-fre-
quency (hf) magnetic field h in a ferromagnetic film placed in a nonuniform external magnetic field H₀(r). The
spatial distribution of hf magnetization and the power flow of the excited waves are derived for the case of a
slightly nonuniform field H₀(r). A parameter having the dimensions of length is introduced to characterize the
effectiveness of coupling between the hf field and the various modes of the excited waves.

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