Structure characterization and ionic conductivity of Ag{sub 2}VP{sub 2}O{sub 8}
- Universidad Complutense, Madrid (Spain)
This paper reports the structure, transport properties and magnetic susceptibility of the new silver vanadium(IV) diphosphate Ag{sub 2}VP{sub 2}O{sub 8}. The structure was refined from X-ray powder diffraction by the Rietveld method. This phase, isostructural to Na{sub 2}VP{sub 2}O{sub 8}, crystallizes in the monoclinic space group P2{sub 1}/c with the parameters a = 7.739 {angstrom}, b=13.611 {angstrom}, c=6.294 {angstrom}, {beta}=99.01{degrees}, Z=4, and V=654.8 {angstrom}{sup 3}. It consists of [VP{sub 2}O{sub 8}]{sub {infinity}} layers, observed in many phosphorus compounds, parallel to the (010) plane interleaved with silver cations. The structure delimits rather large tunnels running along with [010] direction, where silver cations are located too. Electrical transport measurement has been carried out, by complex impedance, to determine the ionic conductivity of the compound and its evolution with temperature and frequency. Curie-type behavior is observed in the magnetic susceptibility which confirms the tetravalent state of vanadium and suggests no magnetic interactions.
- OSTI ID:
- 543089
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 130; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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