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

被引：15

作者：

Dash, Priyanka ^{[1
]}

Furman, Eugene ^{[1
]}

Pantano, Carlo G. ^{[1
]}

Lanagan, Michael T. ^{[1
]}

机构：

[1] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 08期

基金：

美国国家科学基金会;

关键词：

SILICATE-GLASSES; DIELECTRIC-RELAXATION; BLOCKING ANODE; POLED SILICA; FUSED-SILICA; DIFFUSION; DEPLETION; CONDUCTIVITY; BARIUM;

D O I：

10.1063/1.4794174

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Activation energies (E-a) 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 E-a (0.93, 1.83, and 3.5 eV for Na, Ba, and Ca, respectively). The higher value of E-a for Ca transport is attributed to mixed alkaline earth effect. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794174]

引用

页数：5

共 50 条

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