Character of the process | Avrami exponent (α) |

Constant-current density of the diffusion | 3 |

Constant flux of the diffusion, with $\left(\alpha /{n}_{0}\right)\ll 1$ | 3/2 |

Constant flux of the diffusion, with $\left(\alpha /{n}_{0}\right)\gg 1$ | 1 |