Surface magnetostatic oscillations in ferrite pipes of elliptical cross-section

Authors

DOI:

https://doi.org/10.3103/S073527270606001X

Abstract

The paper presents a new theory of surface magnetostatic oscillations in ferrite pipes of elliptical cross-section. A modified change of variables is used for transition to the elliptic coordinate system. The spectrum of such oscillations is shown to consist of two groups — a high-frequency and a low-frequency one, localized on different surfaces of the ferrite. For both groups the fundamental modes (n= 1) are studied, and dependence of the frequency interval between them on physical dimensions of the system is investigated. Comparison between the theory and experiment is carried out. The pipes of this type can operate as readjustable two-frequency resonators in the microwave range of frequencies.

References

NEFYODOV, Y.I. Open Coaxial Resonator Structures [in Russian]. Moscow: Nauka, 1982.

DYOTT, R.B. Elliptic Fiber Waweguides. Norwood, MA: Artech House, 1995.

DE WAMES, R.E.; WOLFRAM, T. "Magnetostatic surface modes in an axially magnetized elliptical cylinder," Applied Physics Letters, v.16, n.8, p.305-308, 1970. DOI: http://dx.doi.org/10.1063/1.1653205.

WALKER, L.R. "Magnetostatic modes in ferromagnetic resonance," Phys. Rev., v.105, n.2, p.390-399, 1957. DOI: http://dx.doi.org/10.1103/PhysRev.105.390.

SCHNEIDERE, M.; MARQUART, J. "Fast computation of modified Mathieu functions applied to elliptical waveguide problems," IEEE Trans. Microwave Theory Tech., v.47, n.4, p.513-515, 1999. DOI: http://dx.doi.org/10.1109/22.754887.

ZAVISLYAK, I.V.; GOLOVATCH, G.P.; POPOV, M.A.; ROMANYUK, V.F. "Surface magnetostatic oscillations in elliptical openings and cylinders," Proc. of 19th Int. Workshop on New Magnetic Materials of Microelectronics, 2004, Moscow, Russia. Moscow: M. V. Lomonosov Moscow University, 2004, p.263-265.

JORZICK, J.; DEMOKRITOV, S.O.; MATHIEU, C.; ET AL. "Brillouin light scattering from quantized spin waves in micron-size magnetic wires," Phys. Rev. B, v.60, n.22, p.15194-15200, 1999. DOI: http://dx.doi.org/10.1103/PhysRevB.60.15194.

Published

2006-06-01

Issue

Section

Research Articles