Role of molybdenum ions in lead zinc phosphate glass system by means of dielectric studies
| Autor: | L. Srinivasa Rao, P. Venkateswara Rao, P. Syam Prasad, G. Naga Raju, T. Satyanarayana, N. Veeraiah, F. Goumeidane, M. Iezid, W. Marltan, G. Sahaya Baskaran |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Dc conductivity Inorganic chemistry chemistry.chemical_element 02 engineering and technology Dielectric 01 natural sciences electrical and dielectric properties Phosphate glass Nanomaterials Ion 0103 physical sciences Lead zinc General Materials Science Materials of engineering and construction. Mechanics of materials 010302 applied physics relaxation dynamics Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics ac conductivity chemistry Mechanics of Materials Molybdenum TA401-492 quantum mechanical tunneling 0210 nano-technology |
| Zdroj: | Materials Science-Poland, Vol 36, Iss 4, Pp 623-629 (2018) |
| ISSN: | 2083-134X |
| DOI: | 10.2478/msp-2018-0074 |
| Popis: | PbO-ZnF2-P2O5 glasses doped with different mol% (0.1 to 1.0) of MoO3 have been prepared. Dielectric properties ∊′(ω), tanδ, σAC, of the synthesized samples were calculated from frequency measurements versus temperature. Space charge polarization was used to analyze the temperature and frequency dispersions of dielectric constant ∊′(ω) and dielectric loss tanδ. Quantum mechanical tunneling model was employed to explain the origin of AC conductivity. The AC conductivity exhibited an increasing trend with increasing concentration of MoO3 (up to 0.2 mol%) but the activation energy for conduction decreased. The plots of AC conductivity revealed that the relaxation dynamics depends on MoO3 dopant concentration. |
| Databáze: | OpenAIRE |
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