Title:
|
Quantum tunneling of magnetization in single domain particles
|
Author:
|
Tejada Palacios, Javier; Balcells i Argemí, Lluís; Linderoth, S. (Soren); Perzynski, R.; Rigau, B.; Barbara, B.; Bacri, J. C. (Jean Claude)
|
Other authors:
|
Universitat de Barcelona |
Abstract:
|
We present a study of the magnetic relaxation of several ferrofluids composed of particles of about 40 Å in diameter (Fe3O4FeC, CoFe2O4). Our key observation is a nonthermal character of the relaxation below 3 K for the CoFe2O4 ferrofluid and below 1 K for the FeC ferrofluid. The crossover temperature from thermal to nonthermal (quantum) regime is in accordance with theoretical suggestions of macroscopic quantum tunneling of magnetization in single doma in particles |
Subject(s):
|
-Relaxació magnètica -Magnetisme -Efecte túnel -Matèria condensada -Anisotropia -Magnetic relaxation -Magnetism -Tunneling (Physics) -Condensed matter -Anisotropy |
Rights:
|
(c) American Institute of Physics, 1993
|
Document type:
|
Article Article - Published version |
Published by:
|
American Institute of Physics
|
Share:
|
|