1. Defect Induced Intrinsic Ferromagnetism in Fullerene Thin Films
- Author
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J.C. Pivin, Amit Kumar, D.K. Avasthi, Semi-conducteurs à large bande interdite (SC2G), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), CSNSM PCI, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Fullerene ,Materials science ,General Physics and Astronomy ,02 engineering and technology ,01 natural sciences ,Fluence ,Ion ,law.invention ,CARBON ,Condensed Matter::Materials Science ,symbols.namesake ,Nuclear magnetic resonance ,law ,0103 physical sciences ,Physics::Atomic and Molecular Clusters ,Thin film ,010306 general physics ,Electron paramagnetic resonance ,Condensed matter physics ,General Engineering ,021001 nanoscience & nanotechnology ,Ferromagnetism ,Amorphous carbon ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,symbols ,ELECTRON ,C-60 ,0210 nano-technology ,Raman spectroscopy - Abstract
The occurrence of intrinsic ferromagnetism in energetic ion irradiated fullerene films is reported. The magnetic properties of irradiated fullerene films are studied by superconducting quantum interference device and electron spin resonance. Raman spectroscopy measurement has been performed to investigate the structural transformation at high fluence. The role of electronic energy density deposition by the ions on their magnetic properties is investigated. The origin of magnetic signal in irradiated films is due to the generation of an amorphous carbon network consisting sp(2)/sp(3) bonded carbon atoms. (C) 2008 The Japan Society of Applied Physics
- Published
- 2008
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