Volume 72, Number 4, November 2005
|Page(s)||658 - 663|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||14 October 2005|
Defect-originated magnetism in carbon-based and non-traditional inorganic compounds: A new class of magnetic materials
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
Accepted: 20 September 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.
PACS: 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
© EDP Sciences, 2005
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