Table 1.

The diffusivity levels of Cu and Ni calculated at 120 °C.

Type of Diffusion	Diffusivity (cm2/s)	Condition	Ref.
DCu in Sn	5.96 × 10−6	Along c-axis	[36]
	9.7 × 10−8	Along a-axis	[36]
DNi in Sn	8.22 × 10−5	Along c-axis	[37]
	1.10 × 10−9	Along a-axis	[37]