摘要
Electron spin resonance (ESR) measurements were carried out at room temperature (=294 K),for FeCl3-filled polyvinylidene fluoride (PVDF) films, over the filling mass fraction range of 0<W<0.40. The films were prepared by casting method. The ESR spectrum of the unfilledPVDF was complex, due to the hyperfine interactions. arisen from the free radicals. For PVDF filled with FeCl3 nearly Symmetric Lorentzian ESR signals, without hyperfine spectra, were found around g=1.92. This is attributed to the superexchange magnetic interactions among the symmetrical octahedrally coordinated Fe3+ ions. The effect of the filling level on the following ESR parameters are discussed: signal asymmetry line width, g-factor, relaxation time, spin (and orbital) magnetic moment, number of unpaired electrons per Fe ion and density of spin electrons.
Electron spin resonance (ESR) measurements were carried out at room temperature (=294 K),for FeCl3-filled polyvinylidene fluoride (PVDF) films, over the filling mass fraction range of 0<W<0.40. The films were prepared by casting method. The ESR spectrum of the unfilledPVDF was complex, due to the hyperfine interactions. arisen from the free radicals. For PVDF filled with FeCl3 nearly Symmetric Lorentzian ESR signals, without hyperfine spectra, were found around g=1.92. This is attributed to the superexchange magnetic interactions among the symmetrical octahedrally coordinated Fe3+ ions. The effect of the filling level on the following ESR parameters are discussed: signal asymmetry line width, g-factor, relaxation time, spin (and orbital) magnetic moment, number of unpaired electrons per Fe ion and density of spin electrons.
