| Full text | |
| Author(s): |
Cotica, L. F.
[1]
;
Freitas, V. F.
[1]
;
Catellani, I. B.
[1]
;
Santos, I. A.
[1]
;
Garcia, D.
[2]
;
Eiras, J. A.
[2]
Total Authors: 6
|
| Affiliation: | [1] Univ Estadual Maringa, Dept Phys, BR-87020900 Maringa, PR - Brazil
[2] Univ Fed Sao Carlos, Dept Phys, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Applied Physics Letters; v. 101, n. 17 OCT 22 2012. |
| Web of Science Citations: | 15 |
| Abstract | |
The origin of enhanced ferroism in La-modified BiFeO3-PbTiO3 compounds is investigated by examining chemical bonding in high-resolution structural measurements. It is shown that structural modifications in the perovskite A-site, such as absent or inactive lone-pair ions, lead to reduced covalence in A-O bonds and increased covalence in B-O bonds for the tetragonal phase. This change in bond character results in a structural accommodation that favors the rhombohedral over the tetragonal phase, which also enhances the ferroic properties. These observations highlight the influence of modifiers on BiFeO3-PbTiO3 bonds and phase stabilization mechanisms. (C) 2012 American Institute of Physics. {[}http://dx.doi.org/10.1063/1.4761989] (AU) | |
| FAPESP's process: | 08/04025-0 - Nanostructured multifunctional multiferroic materials: synthesis, properties, phenomenology and applications |
| Grantee: | José Antonio Eiras |
| Support Opportunities: | Research Projects - Thematic Grants |