Abstract
Complex conductivity wideband spectra from 10 -1 to 10 14Hz (100THz) were determined for 8 mol % yttria-stabilized zirconia (8YSZ) and 8mol% ytterbia-stabilized zirconia (8YbSZ) ceramics. The contributions of electrolyte-electrode interfaces, grain boundaries, intragrain ion-hopping, and optical phonons were quantified to relate the microscopic conduction behavior to the overall conductivity. Intrinsic conductivity was mostly governed by ion-hopping. For both 8YSZ and 8YbSZ, ion-hopping followed the universal dielectric response (UDR) for broadband frequencies except for the phonon dispersion frequencies. The higher overall conductivities of the 8YbSZ ceramics compared to the 8YSZ ones were attributed to differences in the UDR contributions. The dominant factor determining the difference in the intrinsic conductivity in broadband frequencies from direct current (DC) to microwave between the 8YSZ and 8YbSZ ceramics was the DC conductivity due to UDR, σ dc, where σ dc(8YbSZ) > σ dc(8YSZ). Other parameters in the UDR and the optical parameters did not greatly influence the intrinsic conductivities.
| Original language | English |
|---|---|
| Article number | 011102 |
| Journal | Japanese Journal of Applied Physics |
| Volume | 51 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2012 |
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ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
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Complex conductivity using wideband spectroscopy for yttria/ytterbia- stabilized zirconia ceramics. / Teranisi, Takasi; Shimizu, Kosuke; Akiyama, Naoki; Hayashi, Hidetaka; Kishimoto, Akira; Fujimori, Kazuhiro.
In: Japanese Journal of Applied Physics, Vol. 51, No. 1, 011102, 01.2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Complex conductivity using wideband spectroscopy for yttria/ytterbia- stabilized zirconia ceramics
AU - Teranisi, Takasi
AU - Shimizu, Kosuke
AU - Akiyama, Naoki
AU - Hayashi, Hidetaka
AU - Kishimoto, Akira
AU - Fujimori, Kazuhiro
PY - 2012/1
Y1 - 2012/1
N2 - Complex conductivity wideband spectra from 10 -1 to 10 14Hz (100THz) were determined for 8 mol % yttria-stabilized zirconia (8YSZ) and 8mol% ytterbia-stabilized zirconia (8YbSZ) ceramics. The contributions of electrolyte-electrode interfaces, grain boundaries, intragrain ion-hopping, and optical phonons were quantified to relate the microscopic conduction behavior to the overall conductivity. Intrinsic conductivity was mostly governed by ion-hopping. For both 8YSZ and 8YbSZ, ion-hopping followed the universal dielectric response (UDR) for broadband frequencies except for the phonon dispersion frequencies. The higher overall conductivities of the 8YbSZ ceramics compared to the 8YSZ ones were attributed to differences in the UDR contributions. The dominant factor determining the difference in the intrinsic conductivity in broadband frequencies from direct current (DC) to microwave between the 8YSZ and 8YbSZ ceramics was the DC conductivity due to UDR, σ dc, where σ dc(8YbSZ) > σ dc(8YSZ). Other parameters in the UDR and the optical parameters did not greatly influence the intrinsic conductivities.
AB - Complex conductivity wideband spectra from 10 -1 to 10 14Hz (100THz) were determined for 8 mol % yttria-stabilized zirconia (8YSZ) and 8mol% ytterbia-stabilized zirconia (8YbSZ) ceramics. The contributions of electrolyte-electrode interfaces, grain boundaries, intragrain ion-hopping, and optical phonons were quantified to relate the microscopic conduction behavior to the overall conductivity. Intrinsic conductivity was mostly governed by ion-hopping. For both 8YSZ and 8YbSZ, ion-hopping followed the universal dielectric response (UDR) for broadband frequencies except for the phonon dispersion frequencies. The higher overall conductivities of the 8YbSZ ceramics compared to the 8YSZ ones were attributed to differences in the UDR contributions. The dominant factor determining the difference in the intrinsic conductivity in broadband frequencies from direct current (DC) to microwave between the 8YSZ and 8YbSZ ceramics was the DC conductivity due to UDR, σ dc, where σ dc(8YbSZ) > σ dc(8YSZ). Other parameters in the UDR and the optical parameters did not greatly influence the intrinsic conductivities.
UR - http://www.scopus.com/inward/record.url?scp=84855805962&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855805962&partnerID=8YFLogxK
U2 - 10.1143/JJAP.51.011102
DO - 10.1143/JJAP.51.011102
M3 - Article
AN - SCOPUS:84855805962
VL - 51
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 1
M1 - 011102
ER -