| Full text | |
| Author(s): |
Pontes, F. M.
[1]
;
Pontes, D. S. L.
[2]
;
Chiquito, A. J.
[3]
;
Pereira-da-Silva, Marcelo A.
[4, 5]
;
Longo, E.
[2, 6]
Total Authors: 5
|
| Affiliation: | [1] Univ Estadual Paulista, UNESP, Dept Chem, BR-17033360 Sao Paulo - Brazil
[2] Univ Fed Sao Carlos, Dept Chem, LIEC, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Fed Sao Carlos, Dept Phys, NanO LaB, BR-13565905 Sao Carlos, SP - Brazil
[4] Univ Sao Paulo, Inst Phys Sao Carlos, BR-13560250 Sao Carlos, SP - Brazil
[5] UNICEP, BR-13563470 Sao Carlos, SP - Brazil
[6] Univ Estadual Paulista, UNESP, Inst Chem, Sao Paulo - Brazil
Total Affiliations: 6
|
| Document type: | Journal article |
| Source: | Materials Letters; v. 138, p. 179-183, JAN 1 2015. |
| Web of Science Citations: | 6 |
| Abstract | |
The influence of Fe content on the structural, microstructural, dielectric, ferroelectric and optical properties was investigated in Pb1/2Sr1/2Ti1-xFexO3 films deposited on Si/SiO2/Ti/Pt and quartz substrates. X-ray diffraction showed that all films presented polycrystalline and single perovskite phases and the change of lattice parameters caused by increasing Fe-doping content replacing Ti4+ ions is very small to be detected by X-ray diffraction technique. Micro-Raman analysis showed the tetragonal nature for both undoped-PSTF and cloped-PSTF (1%Fe) films, while both cloped-PSTF (5%Fe) and PSIT-10 (10%Fe) films presented a pseudocubic structure. It was noticed that all films exhibited a homogeneous microstructure, compact and crack-free. The remnant polarization in the Fe-doped PSTF films was weaker than that for undoped-PSTF films which was attributed to structural changes and smaller grain size. The increasing of Fe content leads to a red shifted band gap relative to undoped PSTF films due localized levels within the forbidden band of PSTF. (C) 2014 Elsevier BM. All rights reserved. (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: | 12/14106-2 - Designe multifunctional oxides with perovskite architecture (Pb, Sr, La, BI) (Ti, Fe) O3 |
| Grantee: | Fenelon Martinho Lima Pontes |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 11/20536-7 - Multifunctional Ferroelectric Materials: Studies of Optical, Electrical and Photoluminescent Properties. |
| Grantee: | Debora da Silva Lima Pontes |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| 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 |