Atomistic simulation of Stoner–Wohlfarth (SW) particle
- Resource Type
- research-article
- Authors
- Ahsan, Junaid Ul; Majeeed, Asif; Singh, Harkirat
- Source
- International Journal of Materials Research. 114(7-8):641-645
- Subject
- Atomistic simulations
Hysteresis
Nano particle
Remanence
Stoner Wohlfarth model
- Language
- English
- ISSN
- 1862-5282
2195-8556
The Stoner–Wohlfarth (SW) model is a very lucid way of describing the dynamics of a single domain particle whose switching properties are important for storage applications such as magnetic random-access memory. This model explains the ideal case hysteresis and angular dependence of magnetization curves of aggregation of single domain particles with uniaxial anisotropy. Based on the energetics of a ferromagnetic particle and using atomistic simulations solving the Landau Lifshitz Gilbert equation, we study the hysteresis loop of a 1 nm ellipsoidal cobalt nanoparticle. The simulated M–H plot also displays the hysteresis branch crossing behavior when the field is applied close to the hard-axis.