Abstract
Nanocrystalline structured films of the alloy Ni₁₁Co₁₁Fe₆₆Zr₇B₄Cu₁ were deposited by pulsed laser ablation deposition onto fused quartz substrates. A substrate temperature of 300°C was found to produce films consisting of body-centered-cubic (bcc) metallic grains suspended in an amorphous matrix. The bcc grain size ranged from 5 - 8 nm for substrate temperatures up to 300°C. Measured values of coercivity were consistently below 4 Oe for films having a saturation magnetization, as 4π Ms, of ∽16 kG with in- plane uniaxial anisotropy fields of 25 to 30 Oe. The ferromagnetic resonance peak- to- peak derivative linewidth was measured to be 34 Oe at a frequency of 9.61 GHz. The zero magnetic field ferromagnetic resonance occurred at ∽2 GHz. These films exhibit soft magnetic properties, high saturation induction, low microwave loss, and the structural stability desirable for thin film inductor applications.
Keywords
nanocrystalline films, exchange-coupled Ni₁₁Co₁₁Fe₆₆Zr₇B₄Cu₁, high frequency applications, microwave properties, structural properties, fused quartz substrates
Subject Categories
Magnetic properties, Pulsed laser deposition, Laser ablation
Disciplines
Electromagnetics and photonics
Publisher
American Institute of Physics
Publication Date
3-15-2008
Rights Information
Copyright 2008 American Institute of Physics.
Rights Holder
American Institute of Physics
Permanent URL
Recommended Citation
Yoon, S. D.; Baraskar, A. K.; Geiler, A.; Yang, A.; Pettiford, C.; Sun, N. X.; Goswami, R.; Willard, M. A.; Vittoria, C.; and Harris, V. G., "Microwave, magnetic, and structural properties of nanocrystalline exchange-coupled Ni₁₁Co₁₁Fe₆₆Zr₇B₄Cu₁ films for high frequency applications" (2008). Electrical and Computer Engineering Faculty Publications. Paper 91. http://hdl.handle.net/2047/d20002262
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microwave_magnetic_and_structural_fig2.zip (75 kB)
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microwave_magnetic_and_structural_fig3.zip (1956 kB)
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microwave_magnetic_and_structural_fig4.zip (19 kB)
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microwave_magnetic_and_structural_fig5.zip (31 kB)
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microwave_magnetic_and_structural_fig6.zip (35 kB)
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microwave_magnetic_and_structural_fig7.zip (42 kB)
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microwave_magnetic_and_structural_fig8.zip (11 kB)
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Additional Files
microwave_magnetic_and_structural_fig1.zip (40 kB)Figure 1
microwave_magnetic_and_structural_fig2.zip (75 kB)
Figure 2
microwave_magnetic_and_structural_fig3.zip (1956 kB)
Figure 3
microwave_magnetic_and_structural_fig4.zip (19 kB)
Figure 4
microwave_magnetic_and_structural_fig5.zip (31 kB)
Figure 5
microwave_magnetic_and_structural_fig6.zip (35 kB)
Figure 6
microwave_magnetic_and_structural_fig7.zip (42 kB)
Figure 7
microwave_magnetic_and_structural_fig8.zip (11 kB)
Figure 8
Notes
Originally published in Journal of Applied Physics 103, 063917 (2008). DOI:10.1063/1.2899094 (http://dx.doi.org/10.1063/1.2899094).