Formation of nanomagnetic thin films by dispersed fullerenes

Zheng, Lingyi A.; Lairson, Bruce M.; Barrera, Enrique V.; Shull, Robert D.
November 2000
Applied Physics Letters;11/13/2000, Vol. 77 Issue 20
Academic Journal
A method of forming magnetic materials using dispersed fullerenes in ferromagnetic materials has been studied. Fullerenes (C[sub 60]) have been integrated into the matrix of Co, Fe, CoFe thin films by thermal vapor codeposition. The size effects and interaction of the C[sub 60] molecules to the metallic atoms promote a self-assembly grain growth mode to produce thin films with unique evoluted microstructures characterized by nanosize columnar grains with uniformly dispersed C[sub 60] on the grain boundaries. These nanocrystalline films have displayed a series of promising magnetic properties, such as high out of plane remanence, high coercivity, fast magnetic switching, and unusual hysteresis behavior. © 2000 American Institute of Physics.


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