Accession Number : ADA571727


Title :   Evidence for Stable High Temperature Ferromagnetism in Fluorine Treated C60


Descriptive Note : Journal article preprint


Corporate Author : ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL NJ


Personal Author(s) : Patel, Rajen ; Owens, Frank J


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a571727.pdf


Report Date : Jan 2013


Pagination or Media Count : 17


Abstract : It is shown by magnetic field dependent ac susceptibility, magnetic force microscopy, and ferromagnetic resonance that exposure of C(sub 60) to fluorine at 160 deg C produces a stable ferromagnetic material with a Curie temperature well above room temperature. The exposure to fluorine is accomplished by decomposing a fluorine rich polymer, trifluorochloroethylene, [F(sub 2) C-CFCl](sub n) which has C(sub 60) imbedded in it. Based on previous experimental observations and molecular orbital calculations, it is suggested that the ferromagnetism is arising from crystals of C(sub 60)-F.


Descriptors :   *FERROMAGNETISM , *FULLERENES , CURIE TEMPERATURE , FERROMAGNETIC RESONANCE , FLUORINE , HIGH TEMPERATURE , MAGNETIC FIELDS , MICROSCOPY , PARTIAL DIFFERENTIAL EQUATIONS , POLYMERS , RAMAN SPECTRA


Subject Categories : Inorganic Chemistry
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE