Alternate Title

Spinwave resonance in FeNiBSi films

Abstract

Ferromagnetic resonance (FMR) measurements have been performed on thin films of Fe₈₀-xNixB₁₅Si₅ alloys (x = 5, 40, and 60). The effective magnetization (4πMeff), magnetic anisotropy field (HA), and g factor were measured. The values of g for all the films ranged between 1.90 < 2.11. Spin-wave resonance (SWR) excitations were observed for H, the magnetic field, applied perpendicular to the film plane. SWR fields were found to obey the n² law and yielded exchange constants in the range of A = O.2-L9x 10-6 ergs/cm. The nearest neighbor exchange parameter J was deduced from A and implies that J varies within a factor of 2 as the value of x changes. In one of the nickel-rich samples, the SWR fields appear to be linear with n implying nonuniform distribution of magnetization in the film.

Notes

Originally published in Journal of Applied Physics 63, 3805 (1988). DOI:10.1063/1.340620 (http://dx.doi.org/10.1063/1.340620).

Keywords

magnetic anisotropy field, FMR, Fe₈₀-xNixB₁₅Si₅ alloys, 4πMeff

Subject Categories

Spin waves, Ferromagnetic resonance, Thin films, Magnetization

Disciplines

Electromagnetics and photonics

Publisher

American Institute of Physics

Publication Date

4-15-1988

Rights Information

Copyright 1988 American Institute of Physics.

Rights Holder

American Institute of Physics

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