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Título: | Hyperfine and magnetic characterization of Fe particles hosted in carbon nanocapsules |
Autor: | Coaquira, José Antônio Huamaní; Rechenberg, Hercílio Rodolfo; Marquina, Clara CSIC ORCID ; Ibarra, M. Ricardo CSIC ORCID; Benito, Ana M. CSIC ORCID ; Maser, Wolfgang K. CSIC ORCID ; Muñoz, Edgar CSIC ORCID ; Martínez Fernández de Landa, María Teresa CSIC ORCID | Fecha de publicación: | 2001 | Editor: | Springer Nature | Citación: | Hyperfine Interactions 134: 103–108 (2001) | Resumen: | Iron particles encaged in carbon nanocapsules have been produced by the Krätschmer–Huffmann carbon-arc discharge method. Soot, collarette and cathode samples have been characterized by Mössbauer spectroscopy and magnetic measurements in the temperature range 4.2–300 K. Different iron phases and iron-carbon solid solutions have been detected in our samples. The Einstein model has been used to evaluate the coupling constant between the particles and their environment, yielding values of the order 1–10 N/m. Irreversibilities observed at ZFC and FC curves for soot samples would suggest the presence of superparamagnetism only if the particles presented a blocking temperature above 300 K. | Versión del editor: | https://doi.org/10.1023/A:1013842720163 | URI: | http://hdl.handle.net/10261/255172 | DOI: | 10.1023/A:1013842720163 | ISSN: | 0304-3834 |
Aparece en las colecciones: | (ICB) Artículos (ICMA) Artículos |
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