Linear intermode conversion of electromagnetic wave energy in a magnetically soft gyrotropic material |
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Authors: | A S Antonov A N Lagar’kov I T Yakubov |
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Institution: | (1) Scientific-Research Center for Applied Problems in Electrodynamics, Russian Academy of Sciences, 127412 Moscow, Russia |
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Abstract: | The excitation of axial radio-frequency (rf) magnetic induction by an axial rf current is observed in a conductor with circular
magnetic anisotropy when a weak magnetizing field is applied. The conductor is an amorphous cobalt-based wire, which exhibits
azimuthal magnetic anisotropy. It serves as the central conductor in a coaxial line. The axial rf magnetic induction produces
an emf in an induction coil coaxial to the conductor. The induction coil is part of a matched receiving circuit. The power
conversion coefficient is as high as tens of percent. The measurements demonstrate the high sensitivity of the conversion
coefficient to an external field. The theory of ferromagnetic resonance faithfully describes the results of the observations.
Zh. Tekh. Fiz. 69, 58–63 (March 1999) |
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