Fast electron energy loss spectrum of an amorphous tungsten trioxide film

The forward scattering energy loss spectrum of 300 KeV electrons transmitted through thin films of WO3 has been measured in the energy range of 0.8 to 225 eV with an energy loss resolution of 0.1 eV. Energy losses due to excitation of color centers, inter band transitions and core electrons in WO3 have been identified. Measurement of the elastic electron diffraction pattern revealed the amorphous nature of the film with structural differences depending upon the preparative methods. (author)