Gerald Burns, E.A. Giess, et al.
IEEE JQE
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.
Gerald Burns, E.A. Giess, et al.
IEEE JQE
W.J. Nicholson, Gerald Burns
Physical Review
Gerald Burns, F.H. Dacol, et al.
Solid State Communications
J.B. Torrance, B.A. Scott, et al.
Solid State Communications