Skip to content

Research at St Andrews

Dc and ac Conductivities of (V2O5)x(B2O3) 1-X oxide glasses

Research output: Contribution to journalArticlepeer-review

Author(s)

H. El Mkami, B. Deroide, R. Backov, J. V. Zanchetta

School/Research organisations

Abstract

Glasses of composition (V2O5)x(B2O3) 1-x with x = 0.1, 0.3, 0.5, 0.7 and 0.9 were obtained by a quenching technique. Conductivity measurements using σac were performed on compact pellets of these materials. The conductivity behavior in direct regime, σdc, is described by the "small polaron" model. The room temperature variation of log σdc with the activation energy of each composition, suggests an adiabatic hopping character to the conduction. Application of Hunt's model to describe the ac conductivity behavior shows that the relaxation process has a local character and can be described by hops between each pair of sites.

Close

Details

Original languageEnglish
Pages (from-to)819-826
Number of pages8
JournalJournal of Physics and Chemistry of Solids
Volume61
Issue number5
DOIs
Publication statusPublished - 1 Jan 2000

    Research areas

  • Dielectric losses

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. High-sensitivity Gd3+-Gd3+ EPR distance measurements that eliminate artefacts seen at short distances

    El Mkami, H., Hunter, R. I., Cruickshank, P. A. S., Taylor, M. J., Lovett, J. E., Feintuch, A., Qi, M., Godt, A. & Smith, G. M., 9 Dec 2020, In: Magnetic Resonance. 1, 2, p. 301-313

    Research output: Contribution to journalArticlepeer-review

  2. Allosteric activation of an ion channel triggered by modification of mechanosensitive nano-pockets

    Kapsalis, C., Wang, B., El Mkami, H., Pitt, S. J., Schnell, J., Smith, T. K., Lippiat, J., Bode, B. E. & Pliotas, C., 10 Oct 2019, In: Nature Communications. 10, 14 p., 4619.

    Research output: Contribution to journalArticlepeer-review

  3. A gadolinium spin label with both a narrow central transition and short tether for use in double electron electron resonance distance measurements

    Shah, A., Roux, A., Starck, M., Mosely, J. A., Stevens, M., Norman, D. G., Hunter, R. I., El Mkami, H., Smith, G., Parker, D. & Lovett, J. E., 18 Feb 2019, In: Inorganic Chemistry. Article ASAP

    Research output: Contribution to journalArticlepeer-review

  4. Structure of the chromatin remodelling enzyme Chd1 bound to a ubiquitinylated nucleosome

    Sundaramoorthy, R., Hughes, A. L., El-Mkami, H., Norman, D. G., Ferreira, H. & Owen-Hughes, T., 6 Aug 2018, In: eLife. 7, 28 p., e35720.

    Research output: Contribution to journalArticlepeer-review

  5. Distance measurement of a noncovalently bound Y@C82 Pair with double electron electron resonance spectroscopy

    Gil-Ramírez, G., Shah, A., El Mkami, H., Porfyrakis, K., Briggs, A. D., Morton, J. J. L., Anderson, H. L. & Lovett, J. E., 20 Jun 2018, In: Journal of the American Chemical Society. 140, 24, p. 7420-7424

    Research output: Contribution to journalArticlepeer-review

Related by journal

  1. Virtual crystal approximation study of nitrido silicates and oxonitridoaluminosilicates

    Wilson, D. J., Winkler, B., Juarez-Arellano, E. A., Friedrich, A., Knorr, K., Pickard, C. J. & Milman, V., Jul 2008, In: Journal of Physics and Chemistry of Solids. 69, p. 1861-1868 8 p.

    Research output: Contribution to journalArticlepeer-review

  2. Antiferromagnetic resonance studies in molecular magnetic materials

    Rawson, JM., Alberola, A., El-Mkami, H. & Smith, G. M., Apr 2004, In: Journal of Physics and Chemistry of Solids. 65, 4, p. 727-731 5 p.

    Research output: Contribution to journalArticlepeer-review

  3. EPR investigation of two types of Syrian's natural zeolites

    Soulayman, SS., El MkamI, H. & Smith, G. M., Nov 2004, In: Journal of Physics and Chemistry of Solids. 65, 11, p. 1779-1783 5 p.

    Research output: Contribution to journalArticlepeer-review

  4. Synthesis and structure determination from an extremely small single crystal of a new layered gallium phosphate

    Wragg, DS. & Morris, R. E., Jul 2001, In: Journal of Physics and Chemistry of Solids. 62, p. 1493-1497 5 p.

    Research output: Contribution to journalArticlepeer-review

ID: 269566480

Top