Influence of texturizing and crystalline deffects on the ferroelectric properties ...
| Full text | |
| Author(s): |
Gotardo, Ricardo A. M.
[1]
;
Zabotto, Fabio L.
[1]
;
Garcia, Ducinei
[1]
;
Eiras, Jose A.
[1]
;
Dias, Gustavo S.
[2]
;
Cotica, Luiz F.
[2]
;
Santos, Ivair A.
[2]
;
Coelho, Adelino A.
[3]
Total Authors: 8
|
| Affiliation: | [1] Univ Fed Sao Carlos, Dept Fis, BR-13565345 Sao Paulo - Brazil
[2] Univ Estadual Maringa, Dept Fis, BR-87020900 Maringa, Parana - Brazil
[3] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Dept Fis Aplicada, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | SCRIPTA MATERIALIA; v. 68, n. 5, p. 293-296, MAR 2013. |
| Web of Science Citations: | 2 |
| Abstract | |
TbMnO3 ceramics with enhanced dielectric properties were synthesized by an innovative route combining high-energy ball milling and hot-forging sintering. Dielectric investigations reveal the presence of two distinct relaxation processes: one thermally activated mostly due to dipolar effects and other related to the movement of polar clusters or electric dipoles. Long-range polar order was not achieved, as ferroelectricity in TbMnO3 is strongly dependent on the crystallographic direction. A distribution of relaxation times indicates a cooperative response of the electric dipoles. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 08/04025-0 - Nanostructured multifunctional multiferroic materials: synthesis, properties, phenomenology and applications |
| Grantee: | José Antonio Eiras |
| Support type: | Research Projects - Thematic Grants |