S. Etemad, E.M. Engler, et al.
Physical Review B
Paper
Soft optic phonon mode in ferroelectric Pb5Ge3O11
Abstract
A temperature dependent "soft" optic phonon is found in the ferroelectric Pb5Ge3O11. Other details of the optic phonons that transform as the totally symmetric irreducible representation also are reported. © 1972.
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