Evidence for Stable High Temperature Ferromagnetism in Fluorine Treated C60

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.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2013
Accession Number
ADA571727

Entities

People

  • Frank J. Owens
  • Rajen Patel

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Curie Temperature
  • Elements
  • Ferromagnetic Materials
  • Ferromagnetic Resonance
  • Ferromagnetism
  • Fluorine
  • Frequency
  • High Temperature
  • Magnetic Fields
  • Magnetic Forces
  • Magnetic Phenomena
  • Magnetic Properties
  • Materials
  • Measurement
  • Microscopy
  • Resonance
  • Spectra

Fields of Study

  • Physics

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Superconducting Magnet Technology

Technology Areas

  • Space