Activation energy for alkaline-earth ion transport in low alkali aluminoborosilicate glasses

Priyanka Dash, Eugene Furman, Carlo G. Pantano, Michael T. Lanagan

Research output: Contribution to journalArticle

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Abstract

Activation energies (Ea) for ionic conduction in low-alkali boroaluminosilicate glasses due to alkaline-earth (Ba, Ca) and alkali (Na) ion transport have been estimated using thermally stimulated depolarization current (TSDC) and AC impedance spectroscopy techniques. The TSDC plot showed distinct relaxation peaks which shifted to higher temperatures with increasing ramp rates, and the dielectric dispersion plot showed individual low frequency relaxation peaks indicating space charge polarization due to transport of cations with different Ea (0.93, 1.83, and 3.5 eV for Na, Ba, and Ca, respectively). The higher value of Ea for Ca transport is attributed to mixed alkaline earth effect.

Original languageEnglish (US)
Article number082904
JournalApplied Physics Letters
Volume102
Issue number8
DOIs
StatePublished - Feb 25 2013

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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