Synthesis and characterization of Fe3O4:Yb3+:Er3+ nanoparticles with magnetic and optical properties for hyperthermia applications
| Autor: | Teodoro Córdova Fraga, José de Jesús Bernal Alvarado, Siraj Sidhik, Tzarara López Luke, Alejandro Torres Castro, Elder De la Rosa, M.E. Cano, Gonzalo Ramírez–García, José de Jesús Ibarra–Sánchez |
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| Rok vydání: | 2018 |
| Předmět: |
Ytterbium
Materials science Thermal decomposition Analytical chemistry Nanoparticle chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Photon upconversion 0104 chemical sciences Electronic Optical and Magnetic Materials Magnetic field Erbium chemistry Magnetic nanoparticles 0210 nano-technology Superparamagnetism |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 465:406-411 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2018.05.091 |
| Popis: | The synthesis and characterization of ytterbium (Yb3+) and erbium (Er3+) co–doped Fe3O4 nanoparticles (NPs) was reported for the first time in this work. A set of samples with fixed Er3+ (1 mol%) and different Yb3+concentrations (1, 10, 20 and 50 mol%) were prepared and systematically characterized to study their structural, magnetic, thermal and optical properties. The superparamagnetic behavior of Fe3O4 and Yb3+ and Er3+co–doped Fe3O4 NPs was verified by the hysteresis loop. The co–doped Fe3O4 NPs also presented an upconversion emission in the green and red region. The Fe3O4 and Fe3O4: Yb3+, Er3+ NPs showed hyperthermic behavior for an externally applied AC magnetic field, observing that the introduction of Yb3+ and Er3+ induced a temperature increase of 34.4% in optimal conditions with respect to the non–doped Fe3O4 with a reduction in saturation magnetization of 7.8%. These observations suggest that Fe3O4: Yb3+, Er3+ NPs turns out to be an important candidate in biomedical applications for simultaneous optical imaging and hyperthermic therapy. |
| Databáze: | OpenAIRE |
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