Oxide ion conductivity in doped Ga based perovskite type oxide
Oxide ion conductivity of Ga based perovskite type oxides, LnGaO, (Ln = Nd, La) and its related oxide, A,Ga,O, (A = Ba and St) was investigated. Oxide ion transference number is almost I.0 on Sr,Ga,O, or Ba,Ga,O,. However, electrical conductivity of these A,Ga,O, system oxides was lower than log (...
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| Main Authors: | , , , |
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| Format: | Article |
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Elsevier B.V.
1996
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| Subjects: | |
| Online Access: | http://eprints.utp.edu.my/3799/1/Ishihara_1996_Solid-State-Ionics.pdf http://eprints.utp.edu.my/3799/ |
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| Summary: | Oxide ion conductivity of Ga based perovskite type oxides, LnGaO, (Ln = Nd, La) and its related oxide, A,Ga,O,
(A = Ba and St) was investigated. Oxide ion transference number is almost I.0 on Sr,Ga,O, or Ba,Ga,O,. However,
electrical conductivity of these A,Ga,O, system oxides was lower than log (a/S cm-‘) = - 3 due to the low solubility of
the aliovalent cations. On the other hand, doped perovskite type oxide of NdGaO, and LaGaO; exhibited a high electrical
conductivity and the transference number of oxide ion was higher than 0.9 in the oxygen partial pressure range from PO2 = 1 to 1o-2’ atm. In particular, Ca and Mg doped NdGaO, exhibited a high oxide ion conductivity in similar with LaGaO,based oxide. |
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