Table 1: Nominal thickness, alloy composition, annealing condition, and particle size for CoPt nanoparticles grown on NaCl(001) single-crystal substrates.

Sample no.Nominal thicknessCompositionAnnealing (cooling rate)Particle size (ln  )

No. 1Al2O3 (6.0 nm)/Co (0.7 nm)/Pt (1.0 nm)55 at % Pt973 K-100 min (2.8 K/min)8.4 nm (0.15)
No. 2Al2O3 (6.0 nm)/Co (0.7 nm)/Pt (1.0 nm)55 at % Pt873 K-10 h (2.4 K/min)8.3 nm (0.20)
No. 3Al2O3 (6.0 nm)/Co (0.15 nm)/Pt (0.20 nm)61 at % Pt873 K-1 h (1.5 K/min)4.0 nm (0.13)