d 1 Electrons in amorphous semiconducting V2O5 and MoO3 compounds. (ESR measurements)

Abstract

We have performed electron spin resonance experiments on binary amorphous V 20 s-and MoO 3 compounds (V 20 s --TeO2, V 20 s --BaO, V 20 s --PbO, V 20 s-GeO2, V2Os--As2Oa, MoOa--P20 s, MoO 3-TeO 2) and determined the parameters of the corresponding spin Hamiltonian by 3 cm-, 1.2 cm-and 8 mm band measurements. These measurements yielded values of the contribution to the mean energy difference of the d 1 levels between different vanadium-or molybdenum sites caused by fluctuations of the crystal field.

EPR as a Tool To Investigate the Transition Metal Chemistry on Oxide Surfaces

“…(Table , K-12). It has been shown, that the individual line width Δ B depends on the angle θ [between the magnetic field and the principal axis taken as the z axis (Figure )] and the resonance frequency ν as

10 EPR spectrum (Q-band, 300 K) of a 95 Mo-enriched Mo/SiO 2 catalyst reduced by hydrogen at 500 °C. (Reprinted from ref .

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“…(Table 2, K-12). It has been shown, 44 that the individual line width ∆B depends ) on the angle θ [between the magnetic field and the principal axis taken as the z axis (Figure 3)] and the resonance frequency ν as…”

EPE of impurity ions in disordered solids distributions of the spin hamiltonian parameters

“…A version of (2.14) used by some authors [28,291 in the case of axial symmetry, hv A H ( 6 ) = -(911 cos2 6 Agli + g i sin2 6 A g l ) , (2.15) …”

Crystal Field Splitting of S‐State Ions in Crystalline TeO2 and Amorphous TeO2‐V2O5

“…6b. The ESR lines near g = 2 are caused by 3d electrons onvanadium sites, they are described in [3]. The additional signals in Pig.…”