Structural, Magnetic Properties and Dye-Sensitized Solar Cells Application of Pure and La Doped BiFeO3Powders Prepared by Sol-Gel
| Autor: | Phathaitep Raksa, Supree Pinitsoontorn, Santi Maensiri |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Magnetometer Annealing (metallurgy) Doping 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound Dye-sensitized solar cell chemistry Chemical engineering law Impurity 0103 physical sciences Particle size 0210 nano-technology Bismuth ferrite Sol-gel |
| Zdroj: | Ferroelectrics. 492:150-158 |
| ISSN: | 1563-5112 0015-0193 |
| Popis: | Multifunctional materials Bi1-xLaxFeO3 (x = 0.05, 0.10, 0.15, 0.20) powders with and without annealing (700°C) were prepared by sol-gel method to improve the magnetic and optical properties. The particle size, chemical structures, and chemical compositions of the powders were investigated by bright-field TEM, XRD, SADP, and XRF. The bright-field TEM results show the particle size of the prepared Bi1-xLaxFeO3 powders without annealing (around 200 nm) is less than that of the annealed Bi1-xLaxFeO3 powders (more than 500 nm). The XRD results of the powders without annealing show the formation of rhombohedral structure of BiFeO3 with Bi24Fe2O39 as impurity phase in all samples, whereas the prepared powders annealed at 700°C have a higher phase purity. The M – H hysteresis loop of the powders with annealing and without annealing were measured by vibrating sample magnetometer at room temperature up to the field of 10 kOe. The results demonstrate that the powders with higher purity phase and larger particle size... |
| Databáze: | OpenAIRE |
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