Magnetic force microscopy of nano-size magnetic domain ordering in heavy ion irradiated fullerene films.
In the present work, magnetic force microscopy is employed to investigate the magnetic ordering in ion irradiated fullerene films. It is observed that magnetic domain size is approximately 100-200 nm and magnetic signal is stronger at the domain boundaries. Magnetic signal arise in irradiated films is confirmed by magnetic measurements using a superconducting quantum interference device which increases with the ion fluence. The induced magnetism is possibly due to structural defects in the amorphous carbon phase formed by ion irradiation.
Kumar
Amit
A
Materials Science Group, Inter-University Accelerator Centre, New Delhi 110067, India.
Avasthi
D K
DK
Pivin
J C
JC
Papaléo
R M
RM
Tripathi
A
A
Singh
F
F
Sulania
I
I
D003460:Crystallization / Q000379:methods*; D004574:Electromagnetic Fields; D037741:Fullerenes / Q000737:chemistry* / Q000528:radiation effects; D020450:Heavy Ions; D046911:Macromolecular Substances / Q000737:chemistry; D008280:Magnetics; D008422:Materials Testing; D008567:Membranes, Artificial; D018625:Microscopy, Atomic Force / Q000379:methods*; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D013499:Surface Properties
D037741:Fullerenes; D046911:Macromolecular Substances; D008567:Membranes, Artificial