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We report the effect of electronic excitations induced modifications in the ferroelectric polarization in BiFeO3 (BFO) multiferroic films grown on 0.2% Nb doped SrTiO3 (SNTO) substrates by pulsed laser deposition. The BFO/SNTO films were irradiated with 200 MeV Ag+15 ions with ion fluences of 5 × 1010 to 5 × 1012 ions/cm2 and characterized by using X–ray diffraction (XRD), atomic force microscopy...
We report the structural properties and local electronic structure of vertically aligned ZnO nanorods fabricated on silicon substrate without external catalyst by radio frequency magnetron sputtering. X-ray diffraction and morphological studies reveal the hexagonal wurtzite crystal structure with preferential orientation along the (002) crystallographic plane and vertical alignment of the ZnO nanorods...
The rare-earth based molybdenum chalcogenides, REMo6Se8 (RE = rare-earth metals) have been extensively studied because of their unique crystal structure based on Mo6Se8 clusters and their outstanding properties involving coexistence of superconductivity and magnetism. Among all these compounds, Ce and Eu based chalcogenides are magnetic and non-superconductors and possess many novel properties. Understanding...
We report the X-ray absorption near-edge structures (XANES) of CeAl 2 thin films of various thickness, 40–120nm, at Al K-, Ce L 3 -, and Ce M 4,5 -edges. It is found that the threshold of near-edge absorption features at the Al K-edge shifts to the higher photon energy as film thickness decreases, implying that Al loses p-orbital charge and the valence of Ce increases slightly...
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