Open AccessSIMULATION OF DIELECTRIC LOSS RELATED WITH THE MOTION OF DOMAIN WALLS
Author(s) -
Xiaobing Chen,
Y. Feng,
Chunhua Li,
Zhu Jin-song,
Shen Hui-Min,
Yening Wang
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.1529
Subject(s) - arrhenius equation , dielectric , materials science , condensed matter physics , domain wall (magnetism) , dielectric loss , dielectric dispersion , ceramic , curie temperature , phase transition , dispersion (optics) , lattice (music) , dispersion relation , permittivity , physics , composite material , classical mechanics , optics , magnetization , ferromagnetism , acoustics , optoelectronics , quantum mechanics , magnetic field , kinetics
The measurement of dielectric susceptibility under various frequencies for Pb(Zr0.52Ti0.48)O3 (PZT) ceramics shows that there exists a dielectric loss peak below and close to phase transition temperature, which is relaxational characteristic but disagrees with Arrhenius relation. The peak arise from the interaction between domain walls, lattice and pinning defects. In this paper the behavior of the dielectric loss peak of PZT under various frequencies is simulated by using the dynamic equation of viscous motion of domain walls and by considering the Curie temperature dispersion in ceramics as well. The agreement between the simulatied result and experimental data is quite satisfactory. And from the parameters of simulation the viscous coefficient of the motion of domain walls and the recovering force constant of pinning defects are calculated.