Sensing magnetic nanoparticles using nano-confined ferromagnetic resonances in a magnonic crystal

Peter Metaxas; Manu Sushruth; Ryan Begley; J. Ding; Rob Woodward; Ivan Maksymov; M. Albert; W. Wang; H. Fangohr; A.O. Adeyeye; Mikhail Kostylev

doi:10.1063/1.4922392

Sensing magnetic nanoparticles using nano-confined ferromagnetic resonances in a magnonic crystal

Peter Metaxas, Manu Sushruth, Ryan Begley, J. Ding, Rob Woodward, Ivan Maksymov, M. Albert, W. Wang, H. Fangohr, A.O. Adeyeye, Mikhail Kostylev

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Abstract

© 2015 AIP Publishing LLC. We experimentally demonstrate the use of the magnetic-field-dependence of highly spatially confined, GHz-frequency ferromagnetic resonances for the detection of magnetic nanoparticles using an anti-dot-based magnonic crystal. The stray magnetic fields of nanoparticles within the anti-dots modify nano-confined ferromagnetic resonances in the surrounding periodically nanopatterned magnonic crystal, generating easily measurable resonance peak shifts. The shifts are comparable to the resonance linewidths for high anti-dot filling fractions with their signs and magnitudes dependent upon the mode localization, consistent with micromagnetic simulation results. This is an encouraging result for the development of frequency-based nanoparticle detectors for nano-scale biosensing.

Original language	English
Pages (from-to)	232406-1 - 232406-5
Journal	Applied Physics Letters
Volume	106
Issue number	23
DOIs	https://doi.org/10.1063/1.4922392
Publication status	Published - 11 Jun 2015

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Copyright 2015 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Metaxas, P., Sushruth, M., Begley, R., Ding, J., Woodward, R., Maksymov, I., ... Kostylev, M. (2015). Sensing magnetic nanoparticles using nano-confined ferromagnetic resonances in a magnonic crystal. Applied Physics Letters, 106(23), 232406-1 - 232406-5, and may be found at http://dx.doi.org/10.1063/1.4922392
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title = "Sensing magnetic nanoparticles using nano-confined ferromagnetic resonances in a magnonic crystal",

abstract = "{\textcopyright} 2015 AIP Publishing LLC. We experimentally demonstrate the use of the magnetic-field-dependence of highly spatially confined, GHz-frequency ferromagnetic resonances for the detection of magnetic nanoparticles using an anti-dot-based magnonic crystal. The stray magnetic fields of nanoparticles within the anti-dots modify nano-confined ferromagnetic resonances in the surrounding periodically nanopatterned magnonic crystal, generating easily measurable resonance peak shifts. The shifts are comparable to the resonance linewidths for high anti-dot filling fractions with their signs and magnitudes dependent upon the mode localization, consistent with micromagnetic simulation results. This is an encouraging result for the development of frequency-based nanoparticle detectors for nano-scale biosensing.",

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T1 - Sensing magnetic nanoparticles using nano-confined ferromagnetic resonances in a magnonic crystal

AU - Metaxas, Peter

AU - Sushruth, Manu

AU - Begley, Ryan

AU - Ding, J.

AU - Woodward, Rob

AU - Maksymov, Ivan

AU - Albert, M.

AU - Wang, W.

AU - Fangohr, H.

AU - Adeyeye, A.O.

AU - Kostylev, Mikhail

PY - 2015/6/11

Y1 - 2015/6/11

N2 - © 2015 AIP Publishing LLC. We experimentally demonstrate the use of the magnetic-field-dependence of highly spatially confined, GHz-frequency ferromagnetic resonances for the detection of magnetic nanoparticles using an anti-dot-based magnonic crystal. The stray magnetic fields of nanoparticles within the anti-dots modify nano-confined ferromagnetic resonances in the surrounding periodically nanopatterned magnonic crystal, generating easily measurable resonance peak shifts. The shifts are comparable to the resonance linewidths for high anti-dot filling fractions with their signs and magnitudes dependent upon the mode localization, consistent with micromagnetic simulation results. This is an encouraging result for the development of frequency-based nanoparticle detectors for nano-scale biosensing.

AB - © 2015 AIP Publishing LLC. We experimentally demonstrate the use of the magnetic-field-dependence of highly spatially confined, GHz-frequency ferromagnetic resonances for the detection of magnetic nanoparticles using an anti-dot-based magnonic crystal. The stray magnetic fields of nanoparticles within the anti-dots modify nano-confined ferromagnetic resonances in the surrounding periodically nanopatterned magnonic crystal, generating easily measurable resonance peak shifts. The shifts are comparable to the resonance linewidths for high anti-dot filling fractions with their signs and magnitudes dependent upon the mode localization, consistent with micromagnetic simulation results. This is an encouraging result for the development of frequency-based nanoparticle detectors for nano-scale biosensing.

U2 - 10.1063/1.4922392

DO - 10.1063/1.4922392

M3 - Article

SN - 0003-6951

VL - 106

SP - 232406-1 - 232406-5

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

ER -

Sensing magnetic nanoparticles using nano-confined ferromagnetic resonances in a magnonic crystal

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