Magnetism in C60 Films Induced by Proton Irradiation

Details Magnetism in C60 Films Induced by Proton Irradiation Magnetism in C60 Films Induced by Proton Irradiation

2005-03-13

arxiv.org/abs/cond-mat/0503315v2

Physics

Condensed Matter

Materials Science

4 pages, 4 figures, Submitted to Phys. Rev. B (Rapid Communication)

Scientific paper

It is shown that polycrystalline fullerene thin films on hydrogen passivated Si(111) substrates irradiated by 2 MeV protons displays ferromagnetic-like behavior at 5 K. At 300 K both the pristine and the irradiated film show diamagnetic behavior. Magnetization data in the temperature range 2 - 300 K, in 1 Tesla applied field, for the irradiated film shows much stronger temperature dependence compared to the pristine film. Possible origin of ferromagnetic-like signals in the irradiated films are discussed.

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