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Au/Fe/Au multilayer transducers for magneto-optic surface plasmon resonance sensing
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10.1063/1.3475711
/content/aip/journal/jap/108/5/10.1063/1.3475711
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/5/10.1063/1.3475711
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Top: schematic view of the employed MP trilayer transducer in transversal configuration. The SPP is excited through a coupling prism (Kretschmann configuration). Panels: (a) MO modulation of by an alternating magnetic field. The inset shows the graph definition of the MO modulation factor , (b) schematic plot of the enhancement of TMOKE effect produced when the SPP excitation condition is satisfied, and (c) schematic response of SPR and MOSPR sensors to the same variation in the external refractive index .

Image of FIG. 2.
FIG. 2.

(a) Experimental MO variation in the reflectance for three representative samples of both sets and angular derivative of their corresponding experimental multiplied by their experimental . (b) Experimental MO modulation factor as a function of the upper Au layer thickness.

Image of FIG. 3.
FIG. 3.

Experimental angular curves of for (a) 3 nm Fe set ( Fe/5 nmAu/2 nm Cr/glass) and (b) 5 nm Fe set ( Fe/5 nmAu/2 nm Cr/glass).

Image of FIG. 4.
FIG. 4.

For all the samples grown and as a function of the thickness of Au upper layer: (a) experimental TMOKE increase produced in SPP resonance condition, (b) value, and (c) the maximum value of the angular derivative of . (d) Experimental angular curve for the (30 nm Fe/5 nm Cr/glass) and (30 nm Fe/5 nm Cr/glass) structures.

Image of FIG. 5.
FIG. 5.

(a) Experimental response of the MOSPR and intensity-interrogated SPR sensors to the same variations. The MP transducer is a trilayer and the SPR transducer a Au layer of 48 nm. The inset shows the temporal response of both sensors for the same refractive-index change . (b) Theoretical and experimental of the MP transducer employed (30 nm Fe/5 nm Cr/glass). In the theoretical calculations we used the optical and MO constants determined by Lee.27

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/content/aip/journal/jap/108/5/10.1063/1.3475711
2010-09-03
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Au/Fe/Au multilayer transducers for magneto-optic surface plasmon resonance sensing
http://aip.metastore.ingenta.com/content/aip/journal/jap/108/5/10.1063/1.3475711
10.1063/1.3475711
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