Nanosize effect on the oxide ionic conductivity of lanthanum germanite thin films

Jingwang Yan; Hiroshige Matsumoto; Tatsumi Ishihara

doi:10.1149/1.2041333

Nanosize effect on the oxide ionic conductivity of lanthanum germanite thin films

Jingwang Yan, Hiroshige Matsumoto, Tatsumi Ishihara

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Conductivity of La_1.61GeO_5-δ thin films increased with decreasing film thickness to nanosize or several micrometers. In particular, the evaluation of the conductivity for the films with nanosize thickness at low temperatures was significant. The conductivity of the film was independent of the oxygen partial pressure from 1 to 10^-21 atm and the transport number of oxygen ion in the film was near unity, suggesting that the oxygen ionic conductivity was dominant over a wide p_O2 range. This effect was induced by the large anisotropy of the oxide ionic conduction and the expansion of the lattice of La_1.61GeO_5-δ.

Original language	English
Journal	Electrochemical and Solid-State Letters
Volume	8
Issue number	11
DOIs	https://doi.org/10.1149/1.2041333
Publication status	Published - Nov 21 2005

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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10.1149/1.2041333

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title = "Nanosize effect on the oxide ionic conductivity of lanthanum germanite thin films",

abstract = "Conductivity of La1.61GeO5-δ thin films increased with decreasing film thickness to nanosize or several micrometers. In particular, the evaluation of the conductivity for the films with nanosize thickness at low temperatures was significant. The conductivity of the film was independent of the oxygen partial pressure from 1 to 10-21 atm and the transport number of oxygen ion in the film was near unity, suggesting that the oxygen ionic conductivity was dominant over a wide pO2 range. This effect was induced by the large anisotropy of the oxide ionic conduction and the expansion of the lattice of La1.61GeO5-δ.",

author = "Jingwang Yan and Hiroshige Matsumoto and Tatsumi Ishihara",

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T1 - Nanosize effect on the oxide ionic conductivity of lanthanum germanite thin films

AU - Yan, Jingwang

AU - Matsumoto, Hiroshige

AU - Ishihara, Tatsumi

PY - 2005/11/21

Y1 - 2005/11/21

N2 - Conductivity of La1.61GeO5-δ thin films increased with decreasing film thickness to nanosize or several micrometers. In particular, the evaluation of the conductivity for the films with nanosize thickness at low temperatures was significant. The conductivity of the film was independent of the oxygen partial pressure from 1 to 10-21 atm and the transport number of oxygen ion in the film was near unity, suggesting that the oxygen ionic conductivity was dominant over a wide pO2 range. This effect was induced by the large anisotropy of the oxide ionic conduction and the expansion of the lattice of La1.61GeO5-δ.

AB - Conductivity of La1.61GeO5-δ thin films increased with decreasing film thickness to nanosize or several micrometers. In particular, the evaluation of the conductivity for the films with nanosize thickness at low temperatures was significant. The conductivity of the film was independent of the oxygen partial pressure from 1 to 10-21 atm and the transport number of oxygen ion in the film was near unity, suggesting that the oxygen ionic conductivity was dominant over a wide pO2 range. This effect was induced by the large anisotropy of the oxide ionic conduction and the expansion of the lattice of La1.61GeO5-δ.

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Nanosize effect on the oxide ionic conductivity of lanthanum germanite thin films

Abstract

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