EPR study of V2O5-P2O5-Li2O glass system

Issue Title: Special Section: Organic Electronics; Guest Editor: Amlan J. Pal (ProQuest: Formulae and/or non-USASCII text omitted; see image) glass system, with 0 < x (ProQuest: Formulae and/or non-USASCII text omitted; see image) 50 mol%, was prepared and investigated by EPR method. For low content of V^sub 2^O^sub 5^ all the spectra present a hyperfine structure typical for isolated V^sup 4+^ ions. With the increasing of V^sub 2^O^sub 5^ content, the EPR absorption signal showing hyperfine structure is superposed by a broad line without hyperfine structure characteristic for clustered ions. At high V^sub 2^O^sub 5^ content, the vanadium hyperfine structure disappears and only the broad line can be observed in the spectra. Spin Hamiltonian parameters g (ProQuest: Formulae and/or non-USASCII text omitted; see image) , g (ProQuest: Formulae and/or non-USASCII text omitted; see image) , A (ProQuest: Formulae and/or non-USASCII text omitted; see image) , A (ProQuest: Formulae and/or non-USASCII text omitted; see image) , dipolar hyperfine coupling parameters, P, and Fermi contact interaction parameters, K, have been calculated.The composition dependence of line widths of the first two absorptions from the parallel band and of the broad line characteristic to the cluster formations was also discussed.[PUBLICATION ABSTRACT]