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Magnetization curves of DyN clusters |
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| Authors: | S. Pokrant J.A. Becker |
| Affiliation: | (1) Laboratoire de Magnétisme Louis Néel, B.P. 166, F-38042 Grenoble Cedex 9, France, FR;(2) Institut für Physikalische Chemie und Elektrochemie, Callinstr. 3-3a, D-30167 Hannover, Germany, DE |
| Abstract: | Magnetic properties of isolated DyN clusters are studied in a molecular beam performing Stern-Gerlach experiments. The magnetizations μ z of DyN are measured in dependence of the magnetic field strength B = 0-1.6 T and at nozzle temperatures T n = 18 K and T n = 300 K. At room temperature the magnetization augments linear with the field following a simple paramagnetic model. At T n = 18 K the magnetization curves saturate at field strengths B ≥0.8 T. To explain the magnetization process at low temperatures two models are discussed: A model for adiabatic magnetization based on cluster rotation effects and a modified van-Vleck model. Received 30 November 2000 |
| Keywords: | PACS. 39.10.+j Atomic and molecular beam sources and techniques – 36.40.Cg Electronic and magnetic properties of clusters – 75.50.Cc Other ferromagnetic metals and alloys |
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