Magnetostatic modes in a sphere and polarization current corrections

R. Plumier

doi:10.1016/0031-8914(62)90021-6

Magnetostatic modes in a sphere and polarization current corrections

R. Plumier

Research output › peer-review

Abstract

Resonance frequencies of magnetostatic modes are obtained for a ferrite sphere. Magnetic field and magnetization are obtained in the same approximation (rot h = 0). Polarization current effects are then taken into account for modes of the type (n, n, 0) and (n, n - 1, 0) by a perturbation method correct to the order (kR)². The frequency shift at resonance is obtained; it is shown to be of order 4πM_sε{lunate}( kR n)², in good agreement with experiments. Coupling of modes due to the magnetic field induced by the polarization current can also occur in definite situations. The selection rules are derived and the modes repulsion near degeneracy is obtained in agreement with experiment.

Original language	English
Pages (from-to)	423-444
Number of pages	22
Journal	Physica
Volume	28
Issue number	4
DOIs	https://doi.org/10.1016/0031-8914(62)90021-6
State	Published - Apr 1962
Externally published	Yes

ASJC Scopus subject areas

General Engineering

Access to Document

10.1016/0031-8914(62)90021-6

Cite this

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title = "Magnetostatic modes in a sphere and polarization current corrections",

abstract = "Resonance frequencies of magnetostatic modes are obtained for a ferrite sphere. Magnetic field and magnetization are obtained in the same approximation (rot h = 0). Polarization current effects are then taken into account for modes of the type (n, n, 0) and (n, n - 1, 0) by a perturbation method correct to the order (kR)2. The frequency shift at resonance is obtained; it is shown to be of order 4πMsε{lunate}( kR n)2, in good agreement with experiments. Coupling of modes due to the magnetic field induced by the polarization current can also occur in definite situations. The selection rules are derived and the modes repulsion near degeneracy is obtained in agreement with experiment.",

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AU - Plumier, R.

PY - 1962/4

Y1 - 1962/4

N2 - Resonance frequencies of magnetostatic modes are obtained for a ferrite sphere. Magnetic field and magnetization are obtained in the same approximation (rot h = 0). Polarization current effects are then taken into account for modes of the type (n, n, 0) and (n, n - 1, 0) by a perturbation method correct to the order (kR)2. The frequency shift at resonance is obtained; it is shown to be of order 4πMsε{lunate}( kR n)2, in good agreement with experiments. Coupling of modes due to the magnetic field induced by the polarization current can also occur in definite situations. The selection rules are derived and the modes repulsion near degeneracy is obtained in agreement with experiment.

AB - Resonance frequencies of magnetostatic modes are obtained for a ferrite sphere. Magnetic field and magnetization are obtained in the same approximation (rot h = 0). Polarization current effects are then taken into account for modes of the type (n, n, 0) and (n, n - 1, 0) by a perturbation method correct to the order (kR)2. The frequency shift at resonance is obtained; it is shown to be of order 4πMsε{lunate}( kR n)2, in good agreement with experiments. Coupling of modes due to the magnetic field induced by the polarization current can also occur in definite situations. The selection rules are derived and the modes repulsion near degeneracy is obtained in agreement with experiment.

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U2 - 10.1016/0031-8914(62)90021-6

DO - 10.1016/0031-8914(62)90021-6

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VL - 28

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EP - 444

JO - Physica

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