Table 1 Nanocluster energy at different positions of a carbon atom and a nickel atom

Equivalent positions of the Ni atom

when a C atom occupies the TIS

Type of ratio PB highs

Δu ₁

\( \left(\frac{\mathsf{meV}}{\mathsf{atom}}\right) \)

Δu ₂

\( \left(\frac{\mathrm{meV}}{\mathrm{atom}}\right) \)

Δu _min1,2/Δu _max1,2

%

Δ

\( \left(\frac{\mathrm{meV}}{\mathrm{atom}}\right) \)

Δ−Δu _max1,2

\( \left(\frac{\mathrm{meV}}{\mathrm{atom}}\right) \)

(Δ−Δu _max1,2)/Δ

%