Teodorescu C.-M., Macovei D.
National Institute of Materials Physics, RO
Keywords: EXAFS, fullerenes, magnetism, metal clusters, MOKE, XMCD, XPS, XRD
Metal clusters embedded in fullerite matrices are produced by high vacuum co-evaporation. XPS and X-ray absorption revealed that the metal clusters are protected against contamination. XRD analysis is used to determine the average custer size, which ranges from 3 to 20 nm. The fullerite matrix presents long-range ordering. XMCD is used to investigate separately the spin and orbital moments. These measurements revealed antiferromagnetic coupling between surface and bulk atoms. Giant orbital moments for the surface atoms are found from XMCD sum rule analysis. MOKE is used to identify the magnetic anisotropy of the films.
Journal: TechConnect Briefs
Volume: 1, Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 1
Published: May 20, 2007
Pages: 377 - 380
Industry sector: Advanced Materials & Manufacturing
Topic: Advanced Materials for Engineering Applications
ISBN: 1-4200-6182-8