Magnetic enhancement and magnetic reduction in binary clusters of transition metal atoms |
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Authors: | Andriotis Antonis N Mpourmpakis Giannis Froudakis George E Menon Madhu |
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Affiliation: | Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, P.O. Box 1527, 71110 Heraklio, Crete, Greece. andriot@ies1.forth.gr |
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Abstract: | Electronic and magnetic properties of small binary clusters containing one or two transition metal atoms are investigated using ab initio calculations with a view to explain the experimentally observed magnetic enhancement/reduction in these systems. As the present investigations do not rely on spin-orbit effects, our results reveal the enhancement or reduction in the magnetic moment to depend on two main factors; namely geometry and, most importantly, the d-band filling. The results can be used as a guide in the experimental synthesis of high density magnetic grains. |
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