Abstract
A multi-Debye relaxation model that is based upon the Boltzmann superposition principle has been used to determine the frequency-dispersion behavior of Pb (Mg1/3-Nb2/3)O3 (PMN) and Pb0.88La0.08 (Zr0.65Ti0.35) O3 (PLZT 8/65/35) relaxor ferroelectrics. For PMN, relaxation times on the order of seconds contribute to the dispersive character of the dielectric properties. A defect-relaxation mechanism that involves Mg cation hopping in a structure that is composed of interpenetrating 〈111〉 chains of ordered Pb (Mg1/2Nb1/2) O3 is proposed for PMN. Motion of the Mg cations result in destruction and reconstruction of these ordered chains, which contributes to the dispersive character of PMN.
Recommended Citation
H. T. Lin et al., "Modeling the Dielectric Response and Relaxation Spectra of Relaxor Ferroelectrics," Journal of the American Ceramic Society, vol. 82, no. 10, pp. 2698 - 2704, Wiley, Jan 1999.
The definitive version is available at https://doi.org/10.1111/j.1151-2916.1999.tb02144.x
Department(s)
Materials Science and Engineering
Publication Status
Full Access
International Standard Serial Number (ISSN)
0002-7820
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Wiley, All rights reserved.
Publication Date
01 Jan 1999
