Crystallization behaviors of ultrathin Al-doped HfO<sub>2</sub> amorphous films grown by atomic layer deposition

Crystallization behaviors of ultrathin Al-doped HfO₂ amorphous films grown by atomic layer deposition

Ma Xue-Li^{1, 3}, Yang Hong^{1, 3}, Xiang Jin-Juan^{1, 3}, Wang Xiao-Lei^{1, 3}, Wang Wen-Wu^{1, 3, †}, Zhang Jian-Qi², Yin Hua-Xiang^{1, 3}, Zhu Hui-Long^{1, 3}, Zhao Chao^{1, 3}

(color online) (a) Gibbs free energy schematic diagram of phase transition of Al-doped HfO₂ film from amorphous to crystallization. (b) Variations of Gibbs free energy of a growing spherical new phase particle with particle radius r.