Room-temperature ferromagnetism in hydrothermally treated fullerene

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 al...

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Bibliographic Details
Published in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2021-03, Vol.127, p.114540, Article 114540
Main Authors: Kim, Do Wan, Lee, Kyu Won, Park, Won Koo, Lee, Cheol Eui
Format: Article
Language:English
Subjects:
Ferromagnetic resonance signal
Fullerene
Hydrothermal treatment
Room-temperature ferromagnetism
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Summary: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. •Observation of room-temperature ferromagnetism in hydrothermally treated fullerene.•Spin-1/2 in paramagnetic pristine fullerene and spin-3/2 in ferromagnetic hydrothermally treated fullerene.•Detection of prominent ferromagnetic resonance (FMR) in hydrothermally treated fullerene.
ISSN:1386-9477
1873-1759
DOI:10.1016/j.physe.2020.114540