Experimental Evidence of the Néel-Brown Model of Magnetization Reversal

Wernsdorfer, Wolfgang; Bonet Orozco, E.; Hasselbach, K.; Benoı̂t, A.; Barbara, B.; Demoncy, N.; Loiseau, A.; Pascard, H.; Mailly, D.

doi:10.1103/physrevlett.78.1791

Public

Experimental Evidence of the Néel-Brown Model of Magnetization Reversal

Published in Physical Review Letters • Mar 3, 1997

Authors:

Wolfgang Wernsdorfer

E. Bonet Orozco

K. Hasselbach

Abstract

Presented are the first magnetization measurements of individual ferromagnetic nanoparticles (15--30 nm) at very low temperatures (0.1--6 K). The angular dependence of the hysteresis loop evidenced the single domain character of the particles. Waiting time, switching field, and telegraph noise measu...

Subject

Magnetization

Ferromagnetism

Hysteresis

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