Plasmon assisted improvement of figure of merit of magneto-optical Kerr effect in Au/Co/Au multilayered nanorectangular patch array

Kikuchi, Yusuke; Tanaka, Takuo

doi:10.7567/jjap.57.110305

Cited by 4 publications

(4 citation statements)

References 32 publications

(33 reference statements)

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“…This research field is now called as “magneto-plasmonics 18–20 ”. Our group also has reported that the longitudinal magneto-optical Kerr effect and magneto-optical figure of merit in Au/Co/Au nanostructure is enhanced by the localized surface plasmons excitation 21 . According to these reports, the LSPs affect (and modulate) on the magneto-optical property of the magnetic thin film, but it still remains undiscussed whether the surface plasmon excitation affects the magnetization mechanism or not.…”

Section: Introductionmentioning

confidence: 74%

Strengthen of magnetic anisotropy of Au/Co/Au nanostructure by surface plasmon resonance

Kikuchi

Tanaka

2019

Sci Rep

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We experimentally demonstrated the increase of in-plane magnetic anisotropy in Au/Co/Au nanostructures by localized surface plasmon resonance (LSPR). When an array of Au/Co/Au square patch nanostructures was illuminated with linearly polarized light whose wavelength was 750 nm, the localized surface plasmons were resonantly excited in the nanostructures. From the measurement results of polar magneto-optical Kerr effect curves, we observed the magnetic anisotropy field increase in the Au/Co/Au nanostructure due to the excited surface plasmons. The in-plane magnetic anisotropy energy density was increased about 24%.

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Section: Introductionmentioning

confidence: 74%

Strengthen of magnetic anisotropy of Au/Co/Au nanostructure by surface plasmon resonance

Kikuchi

Tanaka

2019

Sci Rep

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“…In other cases, the concept of FoM can be generalized in terms of the readout performance of detection of minimal effects, which is actually strictly related to the signal-to-noise ratio [160]. Related to the latter definition, Kikuchi and Tanaka performed a systematic study on the longitudinal Kerr effect in arrays of Au/Co/Au rectangular meta-atoms, demonstrating that the addition of plasmonic Au layer to the magnetic active Co layer is effective in terms of enhancement of both the optical and magneto-optical responses compared to bare Co nanopatch array [161].…”

Section: Far-field Diffractive Coupling In Magneto-plasmonic Crystalsmentioning

confidence: 99%

Coupling phenomena and collective effects in resonant meta-atoms supporting both plasmonic and (opto-)magnetic functionalities: an overview on properties and applications [Invited]

Maccaferri¹

2019

J. Opt. Soc. Am. B

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We review both the fundamental aspects and the applications of functional magneto-optic and opto-magnetic metamaterials displaying collective and coupling effects on the nanoscale, where the concepts of optics and magnetism merge to produce unconventional phenomena. The use of magnetic materials instead of the usual noble metals allows for an additional degree of freedom for the control of electromagnetic field properties, as well as it allows light to interact with the spins of the electrons and to actively manipulate the magnetic properties of such nanomaterials. In this context, we explore the concepts of near-field coupling of plasmon modes in magnetic meta-molecules, as well as the effect of excitation of surface lattice resonances in magneto-plasmonic crystals. Moreover, we discuss how these coupling effects can be exploited to artificially enhance optical magnetism in plasmonic meta-molecules and crystals. Finally, we highlight some of the present challenges and provide a perspective on future directions of the research towards photon-driven fast and efficient nanotechnologies bridging magnetism and optics beyond current limits.

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“…Recently, advanced studies have been performed on complex Co/Au multilayer structures investigating their hybrid physical properties such as the spin reorientation transition effect [ 32 ], magneto-optic surface plasmon resonance behavior [ 33 , 34 ] and high-order ferromagnetic resonances [ 28 ]. Furthermore, in more application-oriented studies, Co-oxide layers deposited on nanoporous gold substrates have shown highly effective activities for the electrocatalytic reduction of peroxide [ 35 ] and high sensing performance for nonenzymatic glucose [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Electroless Cobalt Deposition on Dealloyed Nanoporous Gold Substrate: A Versatile Technique to Control Morphological and Magnetic Properties

et al. 2023

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The connection of multidisciplinary and versatile techniques capable of depositing and modeling thin films in multistep complex fabrication processes offers different perspectives and additional degrees of freedom in the realization of patterned magnetic materials whose peculiar physical properties meet the specific needs of several applications. In this work, a fast and cost-effective dealloying process is combined with a fast, low-cost, scalable electroless deposition technique to realize hybrid magnetic heterostructures. The gold nanoporous surface obtained by the dealloying of an Au40Si20Cu28Ag7Pd5 ribbon is used as a nanostructured substrate for the electrodeposition of cobalt. In the first steps of the deposition, the Co atoms fill the gold pores and arrange themselves into a patterned thin film with harder magnetic properties; then they continue their growth into an upper layer with softer magnetic properties. The structural characterization of the hybrid magnetic heterostructures is performed using an X-ray diffraction technique and energy-dispersive X-ray spectroscopy, while the morphology of the samples as a function of the electrodeposition time is characterized by images taken in top and cross-section view using scanning electron microscopy. Then, the structural and morphologic features are correlated with the room-temperature magnetic properties deduced from an alternating-gradient magnetometer’s measurements of the hysteresis loop and first order reversal curves.

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Plasmon assisted improvement of figure of merit of magneto-optical Kerr effect in Au/Co/Au multilayered nanorectangular patch array

Cited by 4 publications

References 32 publications

Strengthen of magnetic anisotropy of Au/Co/Au nanostructure by surface plasmon resonance

Strengthen of magnetic anisotropy of Au/Co/Au nanostructure by surface plasmon resonance

Coupling phenomena and collective effects in resonant meta-atoms supporting both plasmonic and (opto-)magnetic functionalities: an overview on properties and applications [Invited]

Electroless Cobalt Deposition on Dealloyed Nanoporous Gold Substrate: A Versatile Technique to Control Morphological and Magnetic Properties

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