| dc.description | The number of metastable phases, the capriciousness at changing external conditions, and lack of
accurate description of local behavior already resulted in severe misinterpretation of experimental
outcomes for vanadium oxides[1???3]. The scope of already implemented and potential applications
of vanadium oxides is, indeed, impressive, particularly as a battery cathode for energy storage[
4].
Doping is widely exploited as a means of application-oriented tuning of the material properties. The
properties of each particular phase may be tuned by doping to satisfy specific requirements and/or
improve the functional performance. In the work here reported, electric quadrupole interaction on
111mCd nuclei implanted in vanadium pentaoxide doped with different concentrations of Cd were
measured with time-differential perturbed angular correlations (TDPAC).
Pure V2O5 as well as doped with 1%, 5%, and 10% of Cd were measured at different temperatures.
To correlate the results with the possible formation of different phases and compounds, samples
of VO2, CdV2O6, and Cd2V2O7 were also measured. The intention is to provide a comprehensive
description, at an atomic level, of the doping effects on the local crystal structure and the electronic structure around the impurity and the consequences on the properties of the host oxides. Preliminary
results show that the probability of formation of cadmium vanadates is low but the temperature and
atmosphere of measurements have an important effect on the local scale. | |
