Asymmetric reversal in aged high concentration CuMn alloy
Author(s)
Barnsley, LC
Gray, E MacA
Webb, CJ
Griffith University Author(s)
Year published
2013
Metadata
Show full item recordAbstract
The magnetic hysteresis loops of an aged Cu81.2Mn18.8 alloy sample exhibit significant asymmetric reversal at low temperatures, with high sensitivity to the cooling field. Much of the observed behaviour was explained by considering an ensemble of coherent, ferromagnetically aligned clusters interacting with a randomized spin glass component. A modified Stoner-Wohlfarth model was successfully applied to the data using Monte Carlo simulations, in order to gain insight into the dependence of the cluster shape anisotropy and exchange anisotropy on the cooling field. This model suggested that ferromagnetic clusters grow as the ...
View more >The magnetic hysteresis loops of an aged Cu81.2Mn18.8 alloy sample exhibit significant asymmetric reversal at low temperatures, with high sensitivity to the cooling field. Much of the observed behaviour was explained by considering an ensemble of coherent, ferromagnetically aligned clusters interacting with a randomized spin glass component. A modified Stoner-Wohlfarth model was successfully applied to the data using Monte Carlo simulations, in order to gain insight into the dependence of the cluster shape anisotropy and exchange anisotropy on the cooling field. This model suggested that ferromagnetic clusters grow as the cooling field increases.
View less >
View more >The magnetic hysteresis loops of an aged Cu81.2Mn18.8 alloy sample exhibit significant asymmetric reversal at low temperatures, with high sensitivity to the cooling field. Much of the observed behaviour was explained by considering an ensemble of coherent, ferromagnetically aligned clusters interacting with a randomized spin glass component. A modified Stoner-Wohlfarth model was successfully applied to the data using Monte Carlo simulations, in order to gain insight into the dependence of the cluster shape anisotropy and exchange anisotropy on the cooling field. This model suggested that ferromagnetic clusters grow as the cooling field increases.
View less >
Journal Title
Journal of Physics: Condensed Matter
Volume
25
Issue
8
Subject
Condensed matter physics
Electronic and magnetic properties of condensed matter; superconductivity
Materials engineering
Nanotechnology