Enhancement of magneto-optical effects in magnetite nanocrystals near gold surfaces

Gabriel Shemer; Gil Markovich

doi:10.1021/jp025777o

Enhancement of magneto-optical effects in magnetite nanocrystals near gold surfaces

Gabriel Shemer
, Gil Markovich^*

^*Corresponding author for this work

School of Chemistry

Tel Aviv University

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

Magnetic circular dichroism (MCD) was measured at Langmuir-Blodgett films of magnetite (Fe₃O₄) nanocrystals. The measurements of the effect were preformed in two different configurations, transmission and reflection. When a nanocrystal monolayer was deposited on a rough gold surface, the MCD signal was enhanced significantly in comparison to the signal obtained for a monolayer deposited on a hydrophobic glass substrate. The effect was found to be sharply dependent on the separation distance of the magnetite monolayer from the gold surface. This surface enhanced magnetooptical (SEMO) effect is probably caused by the enhancement of the electric field component of the electromagnetic waves at rough features of the gold surface.

Original language	English
Pages (from-to)	9195-9197
Number of pages	3
Journal	Journal of Physical Chemistry B
Volume	106
Issue number	36
DOIs	https://doi.org/10.1021/jp025777o
State	Published - 12 Sep 2002

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title = "Enhancement of magneto-optical effects in magnetite nanocrystals near gold surfaces",

abstract = "Magnetic circular dichroism (MCD) was measured at Langmuir-Blodgett films of magnetite (Fe3O4) nanocrystals. The measurements of the effect were preformed in two different configurations, transmission and reflection. When a nanocrystal monolayer was deposited on a rough gold surface, the MCD signal was enhanced significantly in comparison to the signal obtained for a monolayer deposited on a hydrophobic glass substrate. The effect was found to be sharply dependent on the separation distance of the magnetite monolayer from the gold surface. This surface enhanced magnetooptical (SEMO) effect is probably caused by the enhancement of the electric field component of the electromagnetic waves at rough features of the gold surface.",

author = "Gabriel Shemer and Gil Markovich",

year = "2002",

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doi = "10.1021/jp025777o",

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AU - Shemer, Gabriel

AU - Markovich, Gil

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N2 - Magnetic circular dichroism (MCD) was measured at Langmuir-Blodgett films of magnetite (Fe3O4) nanocrystals. The measurements of the effect were preformed in two different configurations, transmission and reflection. When a nanocrystal monolayer was deposited on a rough gold surface, the MCD signal was enhanced significantly in comparison to the signal obtained for a monolayer deposited on a hydrophobic glass substrate. The effect was found to be sharply dependent on the separation distance of the magnetite monolayer from the gold surface. This surface enhanced magnetooptical (SEMO) effect is probably caused by the enhancement of the electric field component of the electromagnetic waves at rough features of the gold surface.

AB - Magnetic circular dichroism (MCD) was measured at Langmuir-Blodgett films of magnetite (Fe3O4) nanocrystals. The measurements of the effect were preformed in two different configurations, transmission and reflection. When a nanocrystal monolayer was deposited on a rough gold surface, the MCD signal was enhanced significantly in comparison to the signal obtained for a monolayer deposited on a hydrophobic glass substrate. The effect was found to be sharply dependent on the separation distance of the magnetite monolayer from the gold surface. This surface enhanced magnetooptical (SEMO) effect is probably caused by the enhancement of the electric field component of the electromagnetic waves at rough features of the gold surface.

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JO - Journal of Physical Chemistry B

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Enhancement of magneto-optical effects in magnetite nanocrystals near gold surfaces

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