Volume 103, Issue 1 pp. 219-230
Original Paper
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FMR Modes of the Bubble Domain Lattice in Garnet Films Magnetized along the Normal

M. Jirsa

M. Jirsa

Institute of Physics, Czechoslovakian Academy of Sciences, Prague

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V. Kamberský

V. Kamberský

Institute of Physics, Czechoslovakian Academy of Sciences, Prague

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A. Kolodrubec

A. Kolodrubec

Tesla Hloubětín, Prague

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M. Nevřiva

M. Nevřiva

Institute of Physics, Czechoslovakian Academy of Sciences, Prague

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First published: 16 September 1987
Citations: 12

Na Slovance 2, 18200 Prague, Czechoslovakia.

Poděbradská 56, 19000 Prague, Czechoslovakia.

Abstract

en

Ferromagnetic resonance experiments on films of YIG doped with Bi and varied Ga contents show three domain resonance modes in a wide range of dc fields applied normal to the film plane. A theoretical analysis is given based on the coupling of three elementary modes of hf magnetization (uniform modes in the bubbles and matrix and a non-uniform mode in the matrix which is driven by hf stray fields, in agreement with recent numerical model solutions). The results indicate principal agreement between theory and experiment (including the previous measurements where only two of the three modes are reported).

Abstract

de

Experimentelle Untersuchungen der ferromagnetischen Resonanz in Schichten von YIG mit Bi-und verschiedenem Ga-Zusatz zeigen drei Domänenresonanzmoden in einem breiten Bereich von Feldstärken im statischen Magnetfeld in der Richtung der Schichtnormale. Die theoretische Analyse berücksichtigt die Kopplung von drei elementaren Magnetisierungsmoden (homogene Moden in den Zylinderdomänen und der Matrix, und eine inhomogene Mode in der Matrix, die durch das Hochfrequenzstreufeld angeregt wird, im Einklang mit neueren numerischen Modellösungen). Die Ergebnisse zeigen prinzipielle Übereinstimmung zwischen Theorie und Experiment (einschließlich vorhergehender Messungen, wo nur über zwei der drei Moden berichtet wurde).

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