Electrical Characterization Of Pr3+ Containing Lithium Borate Glasses By Impedance Spectroscopy

D. D. Ramteke1*, H. C. Swart1, R. S. Gedam

1Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa

2Department of Applied Physics, Visvesvaraya National Institute of Technology, Nagpur 440010, India

Adv. Mater. Lett., 2016, 7 (6), pp 436-440

DOI: 10.5185/amlett.2016.6329

Publication Date (Web): May 30, 2016

E-mail: durgaprasadr@ufs.ac.za

Abstract


The role Pr3+ ions in the lithium borate glasses have been investigated by electrochemical impedance spectroscopy technique. The glasses were prepared by conventional melt quench technique with formula 27.5 Li2O-(72.5-X) B2O3-X Pr6O11 (where, X= 0.5, 1, 1.5 and 2). It is observed that the conductivity of the glasses decreases with the addition of Pr3+ ions which was correlated with increase in the activation energy of the glasses. The observed conductivity behavior in the present study is mostly govern by the Pr3+ as it has higher molecular weight as compared to other component in the glass system. Insight of conduction mechanism was revel by the scaling of modulus and conductivity data of the prepared samples. Scaling confirms that the conduction mechanism is compositional dependent. Based on the present study it is possible to use and modified these glasses as an insulating and dielectric material.

Keywords

Li+ conduction, glasses, impedance spectroscopy, rare earths.

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