Abstract
The ternary 70P2O5-10Li2MoO4-20Li2O and 70P2O5-10Na2MoO4-20Na2O glasses, prepared by the press-melt quenching technique, were studied at temperatures between 298 and 418 K for their high dc electric field properties. For the above purpose, the effect of a strong electric field on the dc conduction of these amorphous bulk samples was investigated using the gap-type electrode configuration. At low electric fields, the current-voltage (I — V) characteristics have a linear shape, while at high electric fields (> 103 V/cm), bulk samples show nonlinear effects (nonohmic conduction). Current-voltage curves show increasing departure from Ohm’s law with increasing current density, leading to critical phenomena at a maximum voltage (threshold voltage), known as switching (switch from a low-conduction state to a higher-conduction state at threshold voltage). The Pool-Frenkel high-field effect was observed at electrical fields of about 103–104 V/cm; then the lowering factor of the potential barrier, the high frequency dielectric constant, and the refractive index of these glasses were determined.
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D. Souri, M. Elahi, Phys. Scr. 75, 219 (2007)
A. Avila, R. Asomoza, Solid State Electronics 44, 17 (2000)
A. Abdel-All, A. Elshafie, M.M. Elhawary, Vacuum 59, 845 (2000)
D. Souri, M. Elahi, Czech. J. Phys. 56, 419 (2006)
M. Elahi, D. Souri, Indian J. Pure App. Phys. 40, 620 (2002)
M. Elahi, D. Souri, Indian J. Pure App. Phys. 44, 468 (2006)
M. Pal, K. Hirota, Y. Tsujigami, H. Sakata, J. Phys. D 34, 459 (2001)
B. Santic, A. Mogus-Milankovic, D.E. Day, J. Non-Cryst. Solids 296, 65 (2001)
B.I. Sharma, A. Srinvasan, Phys. Status Solidi B 229, 1405 (2002)
R.A. Montani, M. Levy, J.L. Souquet, J. Non-Cryst. Solids 149, 249 (1992)
H. Hirashima, Y. Watanabe, T. Yoshida, J. Non-Cryst. Solids 95, 825 (1987)
N. Lebrun, M. Levy, J.L. Souquet, Solid State Ionics 40, 718 (1990)
V.K. Dhawan, A. Mansingh, J. Non-Cryst. Solids 51, 87 (1982)
J. Singh, Optoelectronics: An introduction to materials and devices (McGraw-Hill International Edition, Electrical Engineering Series, University of Michigan, 1996) 132
M.A. Sidkey, R. Elmallawany, R.I. Nakhla, A. Abdelmoneim, J. Non-Cryst. Solids 215, 75 (1997)
A.K. Jonscher, In: P.G. Lecomber, J. Mort (Eds.), Electronic and structural properties of amorphous semiconductors (Academic Press, London, 1973) 329
I.G. Austin, M. Sayer, J. Phys. C 7, 905 (1974)
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Souri, D., Elahi, M. & Yazdanpanah, M.S. Pool-Frenkel effect and high frequency dielectric constant determination of semiconducting P2O5-Li2MoO4-Li2O and P2O5-Na2MoO4-Na2O bulk glasses. centr.eur.j.phys. 6, 306–310 (2008). https://doi.org/10.2478/s11534-008-0031-3
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DOI: https://doi.org/10.2478/s11534-008-0031-3