Title :
Magneto-optics on nanoparticle systems
Author :
Kalska, B. ; Paggel, J. ; Fumagalli, P. ; Hilgendorff, M. ; Rybezynski, J. ; Giersig, M.
Author_Institution :
Inst. fur Experimentalphys., Freie Univ. Berlin, Germany
Abstract :
Summary form only given. The authors present results from magneto-optical studies of different Co and magnetite-based nanoparticle systems (Co, Fe/sub 3/O/sub 4/, Mn/sub 0.5/Fe/sub 2.5/O/sub 4/, Co/sub 0.5/Fe/sub 2.5/O/sub 4/, Ni/sub 0.5/Fe/sub 2.5/O/sub 4/) of 8 to 15 nm diameter deposited on Al and Cu substrates. A strong influence of the particle size distribution and composition on the magneto-optical properties is observed for all type of particles. The sign of the magneto-optical Kerr effect is inverted as compared to reference bulk or thin film compounds. The magnitude of the Kerr rotation is relatively large (50% of the bulk value) for all nanoparticles systems based on magnetite.
Keywords :
Kerr magneto-optical effect; cobalt; cobalt compounds; iron compounds; magnetic particles; manganese compounds; nanoparticles; nickel compounds; particle size; 8 to 15 nm; Al; Al substrate; Co; Co/sub 0.5/Fe/sub 2.5/O/sub 4/; Cu; Cu substrate; Fe/sub 3/O/sub 4/; Kerr rotation; Mn/sub 0.5/Fe/sub 2.5/O/sub 4/; Ni/sub 0.5/Fe/sub 2.5/O/sub 4/; composition dependence; magnetite; magnetite-based nanoparticle systems; magneto-optical Kerr effect; magneto-optical properties; nanoparticle systems; particle size distribution; Atom optics; Magnetic devices; Magnetic properties; Magnetooptic devices; Magnetooptic effects; Nanoparticles; Nanoscale devices; Optical devices; Optical films; Zinc oxide;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001271
