Abstract
The ac conductivity and permittivity of mixed alkali, (Li2O)x(Na2O)1-x: 9GeO2, glasses are reported. An analysis of the scaling properties is performed which indicates the ac conductivity and permittivity at different temperatures but fixed glass composition can be collapsed to a master curve. However, these master curves exhibit systematic changes with cation mixing which include a decrease in the conductivity dispersion exponent and substantial increase of dielectric loss at low frequencies. A simple model, based upon the dynamic structure model of Ingram and coworkers, is introduced in an attempt to understand these changes. A key feature of the model is the assumption that the cation's local conduction space is modified by mixing of the two cation species.
| Original language | English |
|---|---|
| Pages (from-to) | 18-29 |
| Number of pages | 12 |
| Journal | Journal of Non-Crystalline Solids |
| Volume | 288 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - Aug 2001 |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Electronic, Optical and Magnetic Materials
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Modeling the ac conductivity dispersion of mixed alkali germanate glasses. / Zhang, J.; Sidebottom, David L.
In: Journal of Non-Crystalline Solids, Vol. 288, No. 1-3, 08.2001, p. 18-29.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Modeling the ac conductivity dispersion of mixed alkali germanate glasses
AU - Zhang, J.
AU - Sidebottom, David L.
PY - 2001/8
Y1 - 2001/8
N2 - The ac conductivity and permittivity of mixed alkali, (Li2O)x(Na2O)1-x: 9GeO2, glasses are reported. An analysis of the scaling properties is performed which indicates the ac conductivity and permittivity at different temperatures but fixed glass composition can be collapsed to a master curve. However, these master curves exhibit systematic changes with cation mixing which include a decrease in the conductivity dispersion exponent and substantial increase of dielectric loss at low frequencies. A simple model, based upon the dynamic structure model of Ingram and coworkers, is introduced in an attempt to understand these changes. A key feature of the model is the assumption that the cation's local conduction space is modified by mixing of the two cation species.
AB - The ac conductivity and permittivity of mixed alkali, (Li2O)x(Na2O)1-x: 9GeO2, glasses are reported. An analysis of the scaling properties is performed which indicates the ac conductivity and permittivity at different temperatures but fixed glass composition can be collapsed to a master curve. However, these master curves exhibit systematic changes with cation mixing which include a decrease in the conductivity dispersion exponent and substantial increase of dielectric loss at low frequencies. A simple model, based upon the dynamic structure model of Ingram and coworkers, is introduced in an attempt to understand these changes. A key feature of the model is the assumption that the cation's local conduction space is modified by mixing of the two cation species.
UR - http://www.scopus.com/inward/record.url?scp=0035421868&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035421868&partnerID=8YFLogxK
U2 - 10.1016/S0022-3093(01)00613-5
DO - 10.1016/S0022-3093(01)00613-5
M3 - Article
AN - SCOPUS:0035421868
VL - 288
SP - 18
EP - 29
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
IS - 1-3
ER -