Elucidating the real effect of Ba and Co doping on the magnetic and optical properties of BiFeO3
We present Ba/Co co-doping effects on BiFeO3 structure, optical, ferromagnetic, and ferroelectric properties at room temperature. XRD indicates a high distortion of the rhombohedral symmetry, confirmed by Raman spectroscopy, where a change in the intensity ratio of E-1/A1-1 vibrational modes is a re...
| Authors: | ; |
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| Format: | Article |
| Status: | Published version |
| Publication date: | 2015 |
| Country: | México |
| Institution: | CIMAV |
| Repository: | Fuente de Objetos Científicos Open Access del CIMAV |
| Language: | English |
| OAI Identifier: | oai:cimav.repositorioinstitucional.mx:1004/426 |
| Online Access: | http://cimav.repositorioinstitucional.mx/jspui/handle/1004/426 |
| Access Level: | Open access |
| Keyword: | info:eu-repo/classification/Autor/A. Sol–gel processesC. Magnetic propertiesC. Optical propertiesD. Perovskites info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/23 |
| Summary: | We present Ba/Co co-doping effects on BiFeO3 structure, optical, ferromagnetic, and ferroelectric properties at room temperature. XRD indicates a high distortion of the rhombohedral symmetry, confirmed by Raman spectroscopy, where a change in the intensity ratio of E-1/A1-1 vibrational modes is a result of the partial substitution of Fe3+ by Co3+. This induces an A-site disorder in the FeO6 octahedra. Co2+ acts as grain growth inhibitor reducing average grain sizes from 304 nm (without cobalt) to 200 nm (with cobalt) after sintering. The magnetization results show that the Co-cation impregnated samples have higher magnetization (31%) than doped and undoped samples. |
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