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Title Magnetooptics in Gold and Silver NanoSizes Low-Dimensional Objects
Authors Sokolov, A.E.
Zabluda, V.N.
Ovchinnikov, S.G.
Knyazev, B.A.
Gerasimov, V.V.
Michlin, Yu.L.
Veshnyakova, E.A.
Zubavichus, Y.V.
Kalsin, A.M.
Keywords Nanostructures
Gold
Silver
Magnetism
Magnetic Circular Dichroism (MCD)
THz
Surface Plasmon
Type Conference Papers
Date of Issue 2013
URI http://essuir.sumdu.edu.ua/handle/123456789/35344
Publisher Sumy State University
License
Citation Magnetooptics in Gold and Silver NanoSizes Low-Dimensional Objects [Текст] / A.E. Sokolov, V.N. Zabluda, S.G. Ovchinnikov et al. // Nanomaterials: Applications & Properties (NAP-2013) : 2-nd International conference, Alushta, the Crimea, September 17-22, 2012 / Edited by: A. Pogrebnjak. - Sumy : Sumy State University, 2013. - V.2, No1. - 01NFPMM06
Abstract The spectra of optical absorption and of magnetic circular dichroism (MCD) have been measured in the 350–1150 nm wavelength range for a set of colloidal solutions containing Au and Ag nanoparticles. The average size of Au nanoparticles was 6 nm and having thiolate coatings with different degrees of chirality. (The average size of Ag nanoparticles was 14 nm and having citrate coatings) The form of absorption and MCD spectra suggests the dipole character of interband transitions involving the 5d–6(sp) for Au orbitals and 4d–5(sp) for Ag orbitals. The absence (within the experimental error) of the MCD spectra dependence on the coating type rules out the hypothesis on the orbital nature of the observed magnetism. We argue that the spin polarization plays the dominant role in the magnetism both for Au and Ag nanoparticles. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35344
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