Processes in solids [24]

Avrami exponent (α)

Beginning of nucleation

3

Nucleation with constant speed

4

Nucleation with growing speed

<4

Staring nucleation and surface growth

2

Diffusional growth from nuclei

1.5

Diffusional growth from growing nuclei

2.5

Diffusional growth in 1 or 2 dimensions

1

Limited diffusional growth in 1 or 2 dimensions

1.5