Distribution of relaxation times in 0.5PMN-0.5PSN ceramics

6533b7d0fe1ef96bd125b710

RESEARCH PRODUCT

Distribution of relaxation times in 0.5PMN-0.5PSN ceramics

K. Bormanis A. Brilingas J. Banys Robertas Grigalaitis Vismants Zauls Andris Sternberg

subject

History Materials science Condensed matter physics Dielectric dispersion Dielectric Frequency dependence Computer Science Applications Education Dielectric spectroscopy Distribution (mathematics)visual_art visual_art.visual_art_medium Relaxation (physics)Ceramic Cole–Cole equation

description

Dielectric properties of chemically ordered and disordered 0.5PbMg1/3Nb2/3O3-0.5 PbSc1/2Nb1/2O3 (0.5PMN-0.5PSN) ceramics were investigated in frequency range from 20 Hz to 3 GHz by dielectric spectroscopy. The broad dielectric dispersion, similar to this typically obtained for relaxor ferroelectrics (RFE), was observed in both ceramics below 350 K. The frequency dependence of dielectric permittivity of these ceramics were analyzed in terms of the distribution of relaxation times and showed the splitting into two components at lower temperatures. The longest relaxation times part slows down following Vogel-Fulcher law with lower freezing temperature compare with typical RFE like PbMg1/3Nb2/3O3.

year	journal	country	edition	language
2007-12-01	Journal of Physics: Conference Series

https://doi.org/10.1088/1742-6596/93/1/012019

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