X-Ray absorption spectroscopy of transition metal–magnesium hydride thin films

X-ray absorption spectroscopy of vanadium dioxide thin films across the phase-transition boundary

X-ray absorption spectroscopy XAS and x-ray photoemission spectroscopy of the V L edge and O K edge were performed on VO2 thin films rf sputtered at various conditions. The spectra give evidence of the changes in the electronic structure depending on the film quality. XAS of the O K edge shows a decrease of the spacing between 3d and 3d bands by 0.8 eV with concurrent broadening of both bands f...

Electronic structure of CeCo2 thin films studied by X-ray absorption spectroscopy

We present an X-ray absorption near-edge structure (XANES) study at Ce L3-, and Co K-edges of CeCo2 thin films with the thickness varying from 30 to 140 nm. Ce L3-edge spectra exhibit the mixed valence nature and the tetravalent contribution increases with the thickness of CeCo2. The variation in the spectral intensity observed at Co K-edge threshold indicates that there is a change in 3d occup...

Metal induced crystallization of amorphous silicon thin films studied by x-ray absorption fine structure spectroscopy

The role of thin metallic layer (Chromium or Nickel) in the crystallization of a-Si film has been studied using X-ray absorption fine structure spectroscopy (XAFS). The films were grown at different substrate temperatures in two different geometrical structures : (a) a 200 nm metal layer (Cr or Ni) was deposited on fused silica (FS) followed by 400 nm of a-Si and (b) the 400 nm a-Si layer was d...

Polarization-dependent X-ray absorption spectroscopy of in-plane aligned (100) YBa2Cu3O7 d thin films

Polarization-dependent X-ray absorption spectra (XAS) on the O 1s edge has been measured on a highly in-plane aligned (1 0 0) a-axis YBa2Cu3O7 d (YBCO) thin films. The in-plane XAS, that is, the electric field E of the linearly polarized synchrotron light parallels to bor c-axes of YBCO films (Ekb or Ekc), were obtained in a normal-incidence alignment. Furthermore, the XAS for Eka was calculate...

Probing surface states of Cu/Ni thin films using x-ray absorption spectroscopy