A NEW EXPERIMENTAL PROCEDURE FOR CHARACTERIZING QUANTUM EFFECTS IN SMALL MAGNETIC PARTICLE-SYSTEMS

Authors
SAPPEY R VINCENT E OCIO M HAMMANN J CHAPUT F BOILOT JP ZINS D
Citation
R. Sappey et al., A NEW EXPERIMENTAL PROCEDURE FOR CHARACTERIZING QUANTUM EFFECTS IN SMALL MAGNETIC PARTICLE-SYSTEMS, Europhysics letters, 37(9), 1997, pp. 639-644
Citations number
11
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
37
Issue
9
Year of publication
1997
Pages
639 - 644
Database
ISI
SICI code
0295-5075(1997)37:9<639:ANEPFC>2.0.ZU;2-1
Abstract
A new experimental procedure is discussed, which aims at separating th ermal from quantum behavior independently of the energy barrier distri bution in small particle systems. Magnetization relaxation data measur ed between 60 mK and 5 K on a sample of nanoparticles is presented. Th e comparison between experimental data and numerical calculations show s a clear departure from a standard thermal dynamics scenario, a resul t which was not obvious without using the new procedure presented here .