Sensing magnetic nanoparticles using nano-confined ferromagnetic resonances in a magnonic crystal
Sensing magnetic nanoparticles using nano-confined ferromagnetic resonances in a magnonic crystal
We demonstrate the use of the magnetic-field-dependence of highly spatially confined, GHz-frequency ferromagnetic resonances in a ferromagnetic nanostructure for the detection of adsorbed magnetic nanoparticles. This is achieved in a large area magnonic crystal consisting of a thin ferromagnetic film containing a periodic array of closely spaced, nano-scale anti-dots. Stray fields from nanoparticles within the anti-dots modify resonant dynamic magnetisation modes in the surrounding 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 modes' localisations (in agreement with micromagnetic simulation results). This is a highly encouraging result for the development of frequency-based nanoparticle detectors for high speed nano-scale biosensing.
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Metaxas, Peter J.
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Sushruth, Manu
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Begley, Ryan A.
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Ding, Junjia
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Woodward, Robert C.
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Maksymov, Ivan S.
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Albert, Maximilian
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Wang, Weiwei
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Fangohr, Hans
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Adeyeye, Adekunle O.
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Kostylev, Mikhail
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11 June 2015
Metaxas, Peter J.
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Sushruth, Manu
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Begley, Ryan A.
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Ding, Junjia
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Woodward, Robert C.
fe722368-49b1-4f75-9c00-2a9128e0c0fd
Maksymov, Ivan S.
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Albert, Maximilian
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Wang, Weiwei
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Fangohr, Hans
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Adeyeye, Adekunle O.
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Kostylev, Mikhail
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Metaxas, Peter J., Sushruth, Manu, Begley, Ryan A., Ding, Junjia, Woodward, Robert C., Maksymov, Ivan S., Albert, Maximilian, Wang, Weiwei, Fangohr, Hans, Adeyeye, Adekunle O. and Kostylev, Mikhail
(2015)
Sensing magnetic nanoparticles using nano-confined ferromagnetic resonances in a magnonic crystal.
Applied Physics Letters, 106 (23), .
(doi:10.1063/1.4922392).
Abstract
We demonstrate the use of the magnetic-field-dependence of highly spatially confined, GHz-frequency ferromagnetic resonances in a ferromagnetic nanostructure for the detection of adsorbed magnetic nanoparticles. This is achieved in a large area magnonic crystal consisting of a thin ferromagnetic film containing a periodic array of closely spaced, nano-scale anti-dots. Stray fields from nanoparticles within the anti-dots modify resonant dynamic magnetisation modes in the surrounding 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 modes' localisations (in agreement with micromagnetic simulation results). This is a highly encouraging result for the development of frequency-based nanoparticle detectors for high speed nano-scale biosensing.
Text
1501.01171v1.pdf
- Accepted Manuscript
More information
Submitted date: 6 January 2015
Accepted/In Press date: 1 June 2015
Published date: 11 June 2015
Organisations:
Computational Engineering & Design Group
Identifiers
Local EPrints ID: 383026
URI: http://eprints.soton.ac.uk/id/eprint/383026
ISSN: 0003-6951
PURE UUID: 2d69a0b8-b8b6-4f04-9876-dc8727fa8800
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Date deposited: 04 Nov 2015 14:53
Last modified: 15 Mar 2024 03:03
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Contributors
Author:
Peter J. Metaxas
Author:
Manu Sushruth
Author:
Ryan A. Begley
Author:
Junjia Ding
Author:
Robert C. Woodward
Author:
Ivan S. Maksymov
Author:
Maximilian Albert
Author:
Weiwei Wang
Author:
Adekunle O. Adeyeye
Author:
Mikhail Kostylev
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