Magnetic Moments and Adiabatic Magnetization of Free Cobalt Clusters
- 1 December 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 95 (23), 237209
- https://doi.org/10.1103/physrevlett.95.237209
Abstract
Magnetizations and magnetic moments of free cobalt clusters () in a cryogenic () molecular beam were determined from Stern-Gerlach deflections. All clusters preferentially deflect in the direction of the increasing field and the average magnetization resembles the Langevin function for all cluster sizes even at low temperatures. We demonstrate in the avoided crossing model that the average magnetization may result from adiabatic processes of rotating and vibrating clusters in the magnetic field and that spin relaxation is not involved. This resolves a long-standing problem in the interpretation of cluster beam deflection experiments with implications for nanomagnetic systems in general.
Keywords
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