Abstract
The oxygen ion conductivity of Y2O3Nb2O5 with a fluorite-like structure was studied. Substitutional solid solutions of Nb2 O5 in Y2O3 lattice formed the defect fluorite phase and remarkably enhanced the oxygen ion conductivity. Doping with tetravalent cations, especially Ti4+ or Ce4+, in yttria-niobia oxide is effective in enhancing the oxygen ion conductivity. Although the n-type semiconducting property appeared below PO2 = 10-18 atm at 1243 K, the yttria-niobia mixed oxide doped with Ce4+, Ti4+, and Zr4+ stably exhibited oxygen-ion conduction in the wide range of oxygen partial pressures studied.
| Original language | English |
|---|---|
| Pages (from-to) | 227-231 |
| Number of pages | 5 |
| Journal | Solid State Ionics |
| Volume | 50 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - Jan 1 1992 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
Cite this
Oxygen ion conductivity of yttria-niobia mixed oxide with fluoride related structure. / Ishihara, Tatsumi; Sato, Keiji; Mizuhara, Yukako; Takita, Yusaku.
In: Solid State Ionics, Vol. 50, No. 3-4, 01.01.1992, p. 227-231.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Oxygen ion conductivity of yttria-niobia mixed oxide with fluoride related structure
AU - Ishihara, Tatsumi
AU - Sato, Keiji
AU - Mizuhara, Yukako
AU - Takita, Yusaku
PY - 1992/1/1
Y1 - 1992/1/1
N2 - The oxygen ion conductivity of Y2O3Nb2O5 with a fluorite-like structure was studied. Substitutional solid solutions of Nb2 O5 in Y2O3 lattice formed the defect fluorite phase and remarkably enhanced the oxygen ion conductivity. Doping with tetravalent cations, especially Ti4+ or Ce4+, in yttria-niobia oxide is effective in enhancing the oxygen ion conductivity. Although the n-type semiconducting property appeared below PO2 = 10-18 atm at 1243 K, the yttria-niobia mixed oxide doped with Ce4+, Ti4+, and Zr4+ stably exhibited oxygen-ion conduction in the wide range of oxygen partial pressures studied.
AB - The oxygen ion conductivity of Y2O3Nb2O5 with a fluorite-like structure was studied. Substitutional solid solutions of Nb2 O5 in Y2O3 lattice formed the defect fluorite phase and remarkably enhanced the oxygen ion conductivity. Doping with tetravalent cations, especially Ti4+ or Ce4+, in yttria-niobia oxide is effective in enhancing the oxygen ion conductivity. Although the n-type semiconducting property appeared below PO2 = 10-18 atm at 1243 K, the yttria-niobia mixed oxide doped with Ce4+, Ti4+, and Zr4+ stably exhibited oxygen-ion conduction in the wide range of oxygen partial pressures studied.
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UR - http://www.scopus.com/inward/citedby.url?scp=0026817925&partnerID=8YFLogxK
U2 - 10.1016/0167-2738(92)90223-C
DO - 10.1016/0167-2738(92)90223-C
M3 - Article
VL - 50
SP - 227
EP - 231
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
IS - 3-4
ER -