Relaxor behaviour of (1 − x) [0.7PbZrO3–0.3(K0.5Bi0.5)TiO3]–xSrTiO3 solid solutions.
In: Journal of Physics D: Applied Physics, Jg. 38 (2005-10-07), Heft 19, S. 3715-3721
Online
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Zugriff:
The T–x phase diagram of (1 − x) [0.7PbZrO3–0.3(K0.5Bi0.5)TiO3]– xSrTiO3 (x = 0–0.7) solid solutions has been plotted using data from x-ray and dielectric studies. It was found that compounds with x < 0.25 and 0.25 < x 0.70 undergo diffuse phase transitions to ferroelectric rhombohedral and tetragonal phases, respectively. The diffuseness of phase transitions is due to the ionic radii difference of cations which occupy positions in the A sublattice of perovskite ABO3 type structure. The study of the dielectric constant dispersion (10−1–3 × 106 Hz) revealed a wide spectrum of relaxation times. The average relaxation time follows the Arrhenius law with temperature dependent activation energy U*(T). It was found that the U*(T) dependence weakened as the diffuseness of the phase transition was increased. [ABSTRACT FROM AUTHOR]
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Titel: |
Relaxor behaviour of (1 − x) [0.7PbZrO3–0.3(K0.5Bi0.5)TiO3]–xSrTiO3 solid solutions.
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Autor/in / Beteiligte Person: | L LNK Korotkov ; S SAG Gridnev ; S SPR Rogova ; N NGP Pavlova ; M MAB Belousov |
Link: | |
Zeitschrift: | Journal of Physics D: Applied Physics, Jg. 38 (2005-10-07), Heft 19, S. 3715-3721 |
Veröffentlichung: | 2005 |
Medientyp: | academicJournal |
ISSN: | 0022-3727 (print) |
DOI: | 10.1088/0022-3727/38/19/021 |
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