Nanoscale X-ray investigation of magnetic metallofullerene peapods

Fabian Fritz, Rasmus Westerström, Aram Kostanyan, Christin Schlesier, Jan Dreiser, Benjamin Watts, Lothar Houben, Martina Luysberg, Stanislav M Advoshenko, Alexey Popov, Claus M Schneider, Carola Meyer

Research output: Contribution to journalArticlepeer-review


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@C80 bulk sample and a macroscopic assembly of filled CNTs indicates 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 characterization of low concentrations of lanthanide ions embedded in molecular nanostructures.
Original languageEnglish
Article number435703
Issue number43
Publication statusPublished - 2017

Subject classification (UKÄ)

  • Nano Technology
  • Other Physics Topics


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