Soft Phonon Anomalies in the Relaxor Ferroelectric Pb(Zn_1/3Nb_2/3)_0.92Ti_0.08O_3

Дата и время публикации : 2000-02-07T22:44:17Z

Авторы публикации и институты :
P. M. Gehring
S. E. Park
G. Shirane

Ссылка на журнал-издание: Phys. Rev. Lett. 84, 5216 (2000)
Коментарии к cтатье: 4 pages, 4 figures
Первичная категория: cond-mat.mtrl-sci

Все категории : cond-mat.mtrl-sci

Краткий обзор статьи: Neutron inelastic scattering measurements of the polar TO phonon mode dispersion in the cubic relaxor Pb(Zn_1/3Nb_2/3)_0.92Ti_0.08O_3 at 500K reveal anomalous behavior in which the optic branch appears to drop precipitously into the acoustic branch at a finite value of the momentum transfer q=0.2 inverse Angstroms, measured from the zone center. We speculate this behavior is the result of nanometer-sized polar regions in the crystal.

Category: Physics