| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Univ Fed Sao Carlos, Dept Chem, Lab Interdisciplinar Eletroquim & Ceram, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Estadual Paulista, Dept Chem, BR-17033360 Bauru, SP - Brazil
[3] Univ Fed Sao Carlos, Dept Phys, NanO LaB, BR-13565905 Sao Carlos, SP - Brazil
[4] Univ Estadual Paulista, Inst Chem, Araraquara, SP - Brazil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS; v. 185, p. 123-128, JUL 2014. |
| Web of Science Citations: | 2 |
| Abstract | |
Highly (100)-oriented Pb0.60Ca0.20Sr0.20TiO3/LNO/LAO structure was fabricated using a chemical deposition process via spin-coating technique. XRD revealed that both LNO and Pb0.60Ca0.20Sr0.20TiO3 films grown on LAO(100) substrate and LNO/LAO(100) structure were crystallized to be highly (h00)-oriented, respectively. AFM images revealed smooth surfaces, spherical-shaped grains and a crack-free surface with a roughness of about 3-7 nm. The tetragonal perovskite phase was confirmed by Raman spectroscopy for Pb0.60Ca0.20Sr0.20TiO3/LNO/LAO and Pb0.60Ca0.20Sr0.20TiO3/LAO structures. The optical transmittance of 340 nm thick Pb0.60Ca0.20Sr0.20TiO3 films on a LAO(100) substrate exhibited an average transmittance above 80% in the wavelength range of 500-1000 nm and an optical band gap E-g of 3.56 and 2.87 eV for the direct and indirect transition processes, respectively. The Pb0.60Ca0.20Sr0.20TiO3/LNO/LAO structure has a hysteresis loop with remnant polarization, P-r, of 12 mu C/cm(2), and a coercive field, E-c, of 46 kV/cm for an electric field at 370 kV/cm along with a dielectric constant over 1200. (C) 2014 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 Opportunities: | Scholarships in Brazil - Post-Doctoral |