Room-temperature ferromagnetism in hydrothermally treated fullerene

Do Wan Kim, Kyu Won Lee, Won Koo Park, Cheol Eui Lee

Research output: Contribution to journalArticlepeer-review

Abstract

We have studied the effects of hydrothermal treatment on fullerene (C60) by means of the magnetization and ferromagnetic resonance (FMR) measurements. Room-temperature ferromagnetism was observed in hydrothermally treated fullerene by the magnetization measurements, and a prominent FMR signal was also detected. The magnetization curves were analyzed by employing ferromagnetic and paramagnetic contributions. Thus, a spin-1/2 species was identified in the paramagnetic pristine fullerene, which may be attributed to hydrogen or C-OH bonds. In contrast, a spin-3/2 species was identified in the ferromagnetic hydrothermally treated fullerene, which may be explained by a hydrogen atom adsorbed to a carbon vacancy.

Original languageEnglish
Article number114540
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume127
DOIs
Publication statusPublished - 2021 Mar

Keywords

  • Ferromagnetic resonance signal
  • Fullerene
  • Hydrothermal treatment
  • Room-temperature ferromagnetism

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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