Abstract
Reduction of the size of a material to a nanometric scale leads to large modifications of its physical properties. This is in particular the case for the linear and nonlinear optical responses of metal nanoparticles with the appearance of a giant resonance, the so-called surface plasmon resonance. In magnetic systems, confinement can also strongly affects the static and dynamical magnetic properties, one consequence being for instance the appearance of superparamagnetism. In this chapter we will discuss some aspects of these properties and of the spectroscopy of nanoparticles formed by one or multiple metals.
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Acknowledgments
E. Cottancin would like to warmly thank all the persons who took part in the works on bimetallic clusters, especially M. Broyer, F. Calvo, M. Gaudry, J. Lermé, M. Pellarin, B. Prével, J.-L. Rousset and J.-L. Vialle. N. Del Fatti thanks all the persons who contributed to this work and in particular F. Vallée, D. Christofilos, P. Langot, O. Muskens, A. Crut, P. Maioli, H. Baida. The Institut Universitaire de France (IUF) is also acknowledged. V. Halté would like to sincerely thank Jean-Yves Bigot for his precious and constant help to obtain the results presented here and for fruitful discussions about the concerned physics. She would like also to thank her colleagues: L. Guidoni, M. Vomir, M. Albrecht, A. Derory. Many thanks to A. Laraoui that realized most of the measurements shown here during his PhD. Finally, she is also grateful to C. Petit for his active participation to ultrafast dynamics measurements on self-organized assemblies. Contacts Natalia Del Fatti, Linear and ultrafast optical properties of metal nanoparticles: delfatti@lasim.univ-lyon1.fr; Emmanuel Cottancin, Bimetallic systems: cottancin@lasim.univ-lyon1.fr; Valérie Halté, Ultrafast optics and magnetism - Femtomagnetism: halte@ipcms.unistra.fr.
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Cottancin, E., Del Fatti, N., Halté, V. (2012). Optical, Structural and Magneto-Optical Properties of Metal Clusters and Nanoparticles. In: Alloyeau, D., Mottet, C., Ricolleau, C. (eds) Nanoalloys. Engineering Materials. Springer, London. https://doi.org/10.1007/978-1-4471-4014-6_10
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