Abstract
The effect of particle size distribution on the field and temperature dependence of the hysteresis loop features like coercivity (HC), remanence (MR), and blocking temperature (TB) is simulated for an ensemble of single domain ferromagnetic nanoparticles with uniaxial anisotropy. Our simulations are based on the two-state model for T < TB and the metropolis Monte–Carlo method for T > TB. It is found that the increase in the grain size significantly enhances HC and TB. The presence of interparticle exchange interaction in the system suppresses HC but causes MR to significantly increase. Our results show that the parameters associated with the particle size distribution (Dd,δ) such as the mean particle size d and standard-deviation δ play key roles in the magnetic behavior of the system.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.