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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.)

Investigation of defects dependence of local piezoelectric response on Fe, La-modified (Pb,Sr)TiO3 thin films: A piezoresponse force microscopy study

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Author(s):
Bastos, W. B. [1] ; Longo, E. [1] ; Chiquito, A. J. [2] ; Pontes, D. S. L. [3] ; Pontes, F. M. [3]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Carlos, Dept Chem, LIEC, Via Washington Luiz, Km 235, POB 676, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Phys, NanO LaB, Via Washington Luiz, Km 235, POB 676, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Estadual Paulista Unesp, Dept Chem, POB 473, BR-17033360 Bauru, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Materials Chemistry and Physics; v. 214, p. 180-184, AUG 1 2018.
Web of Science Citations: 0
Abstract

In this study, undoped-(Pb,Sr)TiO3 and Fe3+, La3+ co-doped (Pb,Sr)TiO3 thin films were investigated at the nanoscale level by piezoresponse force microscopy (PFM), in order to evaluate the impact of doping induced damages on the ferroelectric and piezoelectric properties. Detailed investigations with nano scale resolution have revealed occurrence of abnormal domains in writing pattern under forward and reverse bias for (Pb,Sr,La)(Ti,Fe)O-3 thin films. Further piezoresponse hysteresis loop measurements show that fully switchable loops were observed under high voltage mediated by defect dipoles and by ``ferroelectric-like{''} polar defects clusters. They have been discussed taking into account charged defect formation with both local changes in the dipole moment and local symmetry breaking effects. In addition, the domain writing and its retention behavior of the undoped-PST and (Pb,Sr,La)(Ti,Fe)O-3 thin films were investigated. Undoped-PST films exhibited better stability for both positive and negative domains for a relatively long time in comparison to that observed for (Pb,Sr,La)(Ti,Fe)O-3 films. (C) 2018 Elsevier B.V. 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: 17/10819-8 - CDMF - Center for the Development of Functional Materials
Grantee:Wagner Benício Bastos
Support type: Scholarships in Brazil - Post-Doctorate
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