Abstract

Varying amounts of boron were added to the host FeGa alloy to investigate its impact upon local atomic structure and magnetic and microwave properties. The impact of B upon the local atomic structure in FeGaB films was investigated by extended x-ray absorption fine structure (EXAFS) analysis. The EXAFS fitting results revealed a contraction of lattice parameters with the introduction of B. The Debye-Waller factor determined from EXAFS fitting increases as a function of boron addition and abruptly changes during the structural evolution from crystalline to amorphous that occurs near 9% B. Upon the onset of this transition the static and microwave magnetic properties became exceptionally soft, with values of coercivity and ferromagnetic linewidth reducing to less than 1 Oe and 25 Oe, respectively.

Notes

Originally published in Journal of Applied Physics 105, 07A323 (2009). DOI:10.1063/1.3072027 (http://dx.doi.org/10.1063/1.3072027).

Keywords

microwave properties, FeGaB, EXAFS analysis

Subject Categories

Boron, Atomic structure, Magnetism, Thin films, Extended X-ray absorption fine structure

Disciplines

Electromagnetics and photonics

Publisher

American Institute of Physics

Publication Date

4-1-2009

Rights Information

Copyright 2009 American Institute of Physics.

Rights Holder

American Institute of Physics

Additional Files
effect_of_boron_fig1.zip (261 kB)
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effect_of_boron_fig2.zip (180 kB)
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effect_of_boron_fig3.zip (750 kB)
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effect_of_boron_fig4.zip (169 kB)
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effect_of_boron_fig1.zip (261 kB)
Figure 1
effect_of_boron_fig2.zip (180 kB)
Figure 2
effect_of_boron_fig3.zip (750 kB)
Figure 3
effect_of_boron_fig4.zip (169 kB)
Figure 4

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