Defect-originated magnetism in carbon-based and non-traditional inorganic compounds: A new class of magnetic materialsA. N. Andriotis1, R. M. Sheetz2, E. Richter3 and M. Menon1, 4
1 Institute of Electronic Structure and Laser Foundation for Research and Technology-Hellas P.O. Box 1527, Heraklio, Crete, Greece 71110
2 Center for Computational Sciences, University of Kentucky Lexington, KY 40506-0045, USA
3 DaimlerChrysler AG FT3/SA - Wilhelm-Runge-Str. 11, 89081 Ulm, Germany
4 Department of Physics and Astronomy, University of Kentucky Lexington, KY 40506-0055, USA
received 12 August 2005; accepted 20 September 2005
published online 14 October 2005
Magnetism in organic and non-traditional inorganic materials (NTIMs) is a fascinating phenomenon from both scientific and technological perspective. Recent experimental discovery of ferromagnetism in organic C60-based polymers has challenged the traditional concepts of the origin of magnetism. Although the nature of the s-p magnetism of the C60-based polymers has been distinguished from the nature of the newly observed magnetism in NTIMs, a defect-based picture of magnetism is found to provide a common thread connecting all these materials. As shown in the present work, this magnetism can be considered as a generalized form of the well-known McConnell model, thereby providing a unified classification of these magnetic materials and elucidating its common origin with the d-ferromagnetism.
75.70.Ak - Magnetic properties of monolayers and thin films.
71.15.Pd - Molecular dynamics calculations (Car-Parrinello) and other numerical simulations.
71.15.Mb - Density functional theory, local density approximation, gradient and other corrections.
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