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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of Fe-doping on the structural, microstructural, optical, and ferroeletric properties of Pb1/2Sr1/2Ti1-xFexO3 oxide prepared by spin coating technique

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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: 11/20536-7 - Multifunctional ferroelectric materials: studies of optical, electrical and photoluminescent properties
Grantee:Debora da Silva Lima Pontes
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 08/57872-1 - National Institute for Materials Science in Nanotechnology
Grantee:Elson Longo da Silva
Support type: Research Projects - Thematic Grants
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
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 type: Regular Research Grants