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

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10 Citations (Scopus)

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.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume8
Issue number11
DOIs
Publication statusPublished - Nov 21 2005

Fingerprint

Lanthanum
Ionic conductivity
lanthanum
Oxides
ion currents
Oxygen
Thin films
conductivity
oxides
thin films
Ionic conduction
oxygen
oxygen ions
Partial pressure
partial pressure
Film thickness
micrometers
unity
Anisotropy
film thickness

All Science Journal Classification (ASJC) codes

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

Cite this

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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",
year = "2005",
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doi = "10.1149/1.2041333",
language = "English",
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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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DO - 10.1149/1.2041333

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