High-energy product SmCo5@Fe core-shell nanoparticles

We report a theoretical study of core-shell dipolar interaction effects on the energy product of hard/soft ${\mathrm{SmCo}}_{5}@\mathrm{Fe}$ core-shell spherical nanoparticles. We show that the impact of the core-shell dipolar interaction on the shell reversal process is tunable by the values of the core diameter and shell thickness. Maximum energy product optimization requires small core diameters, and the energy product enhancement may reach more than $370%$ for small core diameters ${\mathrm{SmCo}}_{5}@\mathrm{Fe}$ core-shell nanoparticles.