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Ferromagnetic resonance characterization of magnetostrictive metallic glass coatings
Journal article   Peer reviewed

Ferromagnetic resonance characterization of magnetostrictive metallic glass coatings

S. Tyagi, D. Larson, Y. Wang and L. Bobb
Thin solid films, v 119(1), pp 97-102
1984
DOI: https://doi.org/10.1016/0040-6090(84)90161-5

Abstract

Amorphous ferromagnetic alloys are a promising class of materials that have been successfully used as magnetostrictive elements in fiber optic magnetic sensors. We have used ferromagnetic resonance (FMR) at about 9.5 GHz to characterize highly magnetostrictive film coatings of the amorphous ferromagnetic alloy Fe 81B 13.5Si 3.5C 2.R.f. sputtering was used to prepare films 0.1–0.6 μm thick on glass substrates and cladded single-mode optical fibers of diameter approximately 80 μm. Because of its inherent sensitivity, the FMR technique is shown to be an excellent non-destructive probe for investigating microscopic as well as macroscopic structural inhomogeneities that may arise from the fabrication process itself, subsequent handling or thermal aging of the coatings. An added advantage of the FMR technique is that it also allows a simultaneous measurement of such material parameters as the saturation magnetostriction coefficient, the saturation magnetization, the g factor and the uniaxial magnetic anisotropy energy. The effect of thermal annealing on some of these properties is also reported.

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Collaboration types
Domestic collaboration
Web of Science research areas
Materials Science, Coatings & Films
Materials Science, Multidisciplinary
Physics, Applied
Physics, Condensed Matter
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