Relaxation and freezing of dielectric response in relaxor Pb(Mg1/3Nb2/3)O3 crystal

Details Relaxation and freezing of dielectric response in relaxor Pb(Mg1/3Nb2/3)O3 crystal Relaxation and freezing of dielectric response in relaxor Pb(Mg1/3Nb2/3)O3 crystal

2005-08-17

arxiv.org/abs/cond-mat/0508400v1

Physics

Condensed Matter

Materials Science

PDF file, 7 pages, 4 figures collected on pp. 4-6

Scientific paper

10.1103/PhysRevB.74.132102

Dielectric investigations of the relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 crystal were performed in the frequency domain at 10^(-4) 10^5 Hz. In the ergodic relaxor phase two overlapping relaxation processes obeying the Kohlrausch-Williams-Watts law, exp[-(t/tau)^beta], and the Curievon Schweidler law, t^(-n), respectively, were found and parameterized. The values of beta, n and 1/tau tend to zero at 211 K following the Vogel-Fulcher law, pointing to the glassy freezing of the dipole dynamics related to both relaxation processes.

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