EPR of Mo5+ in amorphous MoO3 thin films

Photochromism in transition-metal oxides

“…Virgin and colored MoO 3 films have also been widely characterized by some physical techniques, such as AES [137], AFM [129,148], ESR [6,7,131,[149][150][151][152], FT-IR absorption spectra [132,142,148], SAXS [38], XPS [33,35,36,133,135,148,153], XRD [7,126,137,140,142,148,[154][155][156][157], electrical characterization [6,138,139,149,158], electron diffraction [6,7,137], energy dispersive spectrometer (EDS) [137], neutron diffraction and scattering [155], Raman spectroscopy [53,[159][160][161], scanning electron microscopy (SEM) [38,126,…”

EPR study of molybdenum-lead-phosphate glasses

“…Independent of the nature of the alkaline ion, the r e conductivity in these glasses was assumed to be due to electronic hopping from the lower valence state Mo 5+ (donor level) to the higher valence state Mo 6+ (acceptor level). It is also well known that the Mo 5+ ion is a sensitive indicator for the structural changes of the local symmetry in oxide glasses [10][11][12][13][14][15][16][17]. Thus, the presence of octahedrally coordinated Mo 5+ ions were identified in the case of phosphate glasses, the octahedron being trigonally distorted [10].…”

Influence of molybdenum ions on the structure of ZnO–As2O3–Sb2O3 glass system by means of spectroscopic and dielectric studies

“…From this equation, we have calculated the minimal distance d between two molybdenum ions, (with C being the value of reduction factor) and presented in Table 6; these distances are observed to be far greater than the Mo-O-Mo distance in several compounds [35]. From these data, we conclude that the molybdenum containing structural units in these glass matrices can only share edges or faces and not common corners [34].…”