Nanoscale x-ray investigation of magnetic metallofullerene peapods
| Autor(en): | Fritz, Fabian Westerstrom, Rasmus Kostanyan, Aram Schlesier, Christin Dreiser, Jan Watts, Benjamin Houben, Lothar Luysberg, Martina Avdoshenko, Stanislav M. Popov, Alexey A. Schneider, Claus M. Meyer, Carola |
Stichwörter: | CARBON NANOTUBES; CIRCULAR-DICHROISM; CNT; endohedral fullerenes; FIELD; FULLERENES; HRTEM; Materials Science; Materials Science, Multidisciplinary; Nanoscience & Nanotechnology; Physics; Physics, Applied; Science & Technology - Other Topics; SPECTROSCOPY; STXM; XMCD | Erscheinungsdatum: | 2017 | Herausgeber: | IOP PUBLISHING LTD | Journal: | NANOTECHNOLOGY | Volumen: | 28 | Ausgabe: | 43 | Zusammenfassung: | Endohedral lanthanide ions packed inside carbon nanotubes (CNTs) in a one-dimensional assembly have been studied with a combination of high resolution transmission electron microscopy (HRTEM), scanning transmission x-ray microscopy (STXM), and x-ray magnetic circular dichroism (XMCD). By correlating HRTEM and STXM images we show that structures down to 30 nm are resolved with chemical contrast and record x-ray absorption spectra from endohedral lanthanide ions embedded in individual nanoscale CNT bundles. XMCD measurements of an Er3N@C-80 bulk sample and a macroscopic assembly of filled CNTs indicate that the magnetic properties of the endohedral Er3+ ions are unchanged when encapsulated in CNTs. This study demonstrates the feasibility of local magnetic x-ray characterisation of low concentrations of lanthanide ions embedded in molecular nanostructures. |
ISSN: | 09574484 | DOI: | 10.1088/1361-6528/aa8b4c |
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