A DFT Investigation of Vibrational Nature and Ferroelectric Phase Transition of BaTiO3 and PbTiO3
XIE Ying1, 2, QIANG Liang-Sheng, ZHONG Hua1,2, YU Hai-Tao2,FU Hong-Gang*,1,2
Acta Chimica Sinica . 2005, (6): 455 -459 .