Z-Contrast STEM Imaging of Long-Range Ordered Structures in Epitaxially Grown CoPt Nanoparticles

Table 1

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

Sample no.	Nominal thickness	Composition	Annealing (cooling rate)	Particle size (ln 𝜎)
No. 1	Al2O3 (6.0 nm)/Co (0.7 nm)/Pt (1.0 nm)	55 at % Pt	973 K-100 min (2.8 K/min)	8.4 nm (0.15)
No. 2	Al2O3 (6.0 nm)/Co (0.7 nm)/Pt (1.0 nm)	55 at % Pt	873 K-10 h (2.4 K/min)	8.3 nm (0.20)
No. 3	Al2O3 (6.0 nm)/Co (0.15 nm)/Pt (0.20 nm)	61 at % Pt	873 K-1 h (1.5 K/min)	4.0 nm (0.13)