Magnetic anisotropy and valence states in La2Co1−xMn1+xO6 ( x≈0.23 ) thin films studied by x-ray absorption spectroscopy techniques

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...

Electronic properties and bonding in ZrHx thin films investigated by valence-band x-ray photoelectron spectroscopy

The electronic structure and chemical bonding in reactively magnetron sputtered ZrHx (x = 0.15, 0.30, 1.16) thin films with oxygen content as low as 0.2 at.% are investigated by 4d valence band, shallow 4p core-level, and 3d core-level x-ray photoelectron spectroscopy. With increasing hydrogen content, we observe significant reduction of the 4d valence states close to the Fermi level as a resul...

Magnetic anisotropy of textured CrO2 thin films investigated by X-ray magnetic circular dichroism

Highly a-axis-textured CrO2 films have been deposited on Al2O3 (0001) substrates by chemical vapor deposition. CrO2 has been found to have highly a-axis (010)-oriented columnar growth on a Cr2O3 (0001) initial layer. The sixfold surface symmetry of the Cr2O3 initial layer leads to three equivalent in-plane orientations of the a-axis-oriented CrO2 unit cell. We report Cr L2,3 X-ray magnetic circ...

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