| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Univ La Habana, Fac Fis, Inst Ciencia & Tecnol Mat, Havana 10400 - Cuba
[2] Univ Estadual Paulista UNESP, Dept Quim & Fis, BR-15385000 Sao Paulo - Brazil
[3] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Applied Physics Letters; v. 94, n. 26, p. 262903-262903, 2009. |
| Web of Science Citations: | 17 |
| Abstract | |
Sr0.5Ba0.5Bi2Nb2O9 ferroelectric ceramics exhibit a complex dielectric behavior, showing typical relaxor behavior. The relaxation processes are described by the Cole-Cole model [K. S. Cole and R. H. Cole, J. Chem. Phys. 9, 341 (1941)]. At temperatures below 490 K, the dielectric relaxation is associated to the relaxorlike ferroelectric behavior, resulting from the inhomogeneous distribution of barium due to its preference for the bismuth site. Above that, the interaction between the dipoles, which form the microdomains above the relaxor ferroelectric peak and the electrons, which are due to the ionization of the oxygen vacancies are discussed as the probable origin of the relaxation. (AU) | |
| FAPESP's process: | 07/05302-4 - Studies of structural, dielectric and electrical properties of PMN-PT ferroelectric system solid solution |
| Grantee: | Banarji Behera |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |