| Full text | |
| Author(s): |
Deus, R. C.
;
Goncalves, L. F.
;
Cavalcanti, C. C.
;
Rocha, L. S. R.
;
Longo, E.
;
Simoes, A. Z.
Total Authors: 6
|
| Document type: | Journal article |
| Source: | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS; v. 28, n. 12, p. 8630-8642, JUN 2017. |
| Web of Science Citations: | 1 |
| Abstract | |
BiFeO3 (BFO) and LaFeO3 (LFO) heterostructures were obtained at room temperature on Pt/TiO2/SiO2/Si (100) substrates by chemical solution deposition at a temperature of 500 degrees C for 2 h. For comparison, the films were also deposited on La0.5Sr0.5CoO3 coated Pt/TiO2/SiO2/Si (100) substrates. The magnetoelectric coefficient measurement was performed to show magnetoelectric coupling behavior of such heterostructures. La0.5Sr0.5CoO3 (LSCO) bottom electrode strongly promotes the formation of high intensity (104) texture of BFO-LFO heterostructures resulting in huge crystal size. The dielectric constants of the films increased from 307 to 400 at 1 MHz with the bottom electrode while the leakage current behavior at room temperature of the films decreased from 10 to 10-10(-7) A/cm(2) at a voltage of 5 V. Improvement of the P-E hysteresis loop was observed for the heterostructure due the decrease of leakage current caused by the LFO sublayer. Room temperature magnetic coercive field measurements indicate that the magnetic behavior is influenced by the nature of bottom electrode. (AU) | |
| FAPESP's process: | 08/57872-1 - National Institute for Materials Science in Nanotechnology |
| Grantee: | Elson Longo da Silva |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/07296-2 - CDMF - Center for the Development of Functional Materials |
| Grantee: | Elson Longo da Silva |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |