K. Mocala, A. Navrotsky, et al.
Journal of Solid State Chemistry
Unlike other ferroelectric perovskites, PbTiO3 displays temperature-dependent Raman spectra consisting of underdamped modes, including the "soft" transverse-optical (TO) modes. Moreover, the softest TO mode shows linewidth divergence at the ferroelectric-to-paraelectric transition. Also in contrast to previously studied perovskites, Raman selection rules are rigorously obeyed in both the ferroelectric and paraelectric states. © 1970 The American Physical Society.
K. Mocala, A. Navrotsky, et al.
Journal of Solid State Chemistry
Gerald Burns
Physical Review
Gerald Burns, F.H. Dacol, et al.
Physical Review B
J.D. Axe, Gerald Burns
Physical Review