Magnetic properties and environment sites in Fe doped SnO 2 nanoparticles
| Autor: | Sergio Ferrari, Laura Gabriela Pampillo, F.D. Saccone |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Mössbauer effect Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Magnetic hysteresis 01 natural sciences Paramagnetism Electron diffraction Ferromagnetism 0103 physical sciences Mössbauer spectroscopy General Materials Science 0210 nano-technology Spectroscopy Hyperfine structure |
| Zdroj: | Materials Chemistry and Physics. 177:206-212 |
| ISSN: | 0254-0584 |
| DOI: | 10.1016/j.matchemphys.2016.04.020 |
| Popis: | Sn 1−x Fe x O 2 nanoparticles (x = 0, 0.05, 0.10 and 0.15) were synthesized by co-precipitation. X-ray diffraction and electron diffraction images showed that only rutile type phase was present in the samples. Electron microscopy was used as a tool for revealing morphology, distribution size and structure characteristics of the nanoparticles; while Energy Dispersive X-Ray Spectroscopy analysis confirmed the selected stoichiometry. 57 Fe and 119 Sn Mossbauer spectroscopy at Room Temperature showed a lattice disorder induced by the incorporation of Fe ions in the structure. No magnetic hyperfine ordering was detected for 57 Fe probes and the asymmetry in their quadrupolar splittings is explained as a texture effect at the nanoparticles shells. Quadrupolar splitting at 119 Sn probe reached a maximum for x = 0.1, being this fact attributable to a highest distorted environment. Magnetic hysteresis loops were measured at different temperatures showing, for Fe doped samples, a combination of paramagnetism and weak ferromagnetism. |
| Databáze: | OpenAIRE |
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