Effects of rare earth cations doped for La site on the oxide ionic conductivity of LaGaO3-based perovskite type oxide

Tatsumi Ishihara; Hideaki Matsuda; Yusaku Takita

doi:10.1016/0167-2738(95)00054-A

Effects of rare earth cations doped for La site on the oxide ionic conductivity of LaGaO₃-based perovskite type oxide

Tatsumi Ishihara, Hideaki Matsuda, Yusaku Takita

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

284 Citations (Scopus)

Abstract

For the suppression of hole conduction in the high oxygen partial pressure range, effects of the addition of small amount of rare earth cations were investigated in this study with La_0.8Sr_0.2Ga_0.8Mg_0.2O_{3 - δ}. It was found that the addition of small amount of rare earth cations for La site in LaGaO₃ was effective for the suppression of hole conduction under high oxygen partial pressure, albeit the electrical conductivity decreased slightly. In particular, perovskite oxide of (La_0.9Nd_0.1)_0.8Sr_0.2Ga_0.8Mg_0.2O_{3 - δ} exhibits almost pure oxide ionic conduction over the oxygen partial pressure from 1 to 10^-21 atm, and the electrical conductivity attains the value of log (σ/S cm^-1) = -0.5 at 1223 K.

Original language	English
Pages (from-to)	147-151
Number of pages	5
Journal	Solid State Ionics
Volume	79
Issue number	C
DOIs	https://doi.org/10.1016/0167-2738(95)00054-A
Publication status	Published - Jul 1995
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1016/0167-2738(95)00054-A

Cite this

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title = "Effects of rare earth cations doped for La site on the oxide ionic conductivity of LaGaO3-based perovskite type oxide",

abstract = "For the suppression of hole conduction in the high oxygen partial pressure range, effects of the addition of small amount of rare earth cations were investigated in this study with La0.8Sr0.2Ga0.8Mg0.2O3 - δ. It was found that the addition of small amount of rare earth cations for La site in LaGaO3 was effective for the suppression of hole conduction under high oxygen partial pressure, albeit the electrical conductivity decreased slightly. In particular, perovskite oxide of (La0.9Nd0.1)0.8Sr0.2Ga0.8Mg0.2O3 - δ exhibits almost pure oxide ionic conduction over the oxygen partial pressure from 1 to 10-21 atm, and the electrical conductivity attains the value of log (σ/S cm-1) = -0.5 at 1223 K.",

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T1 - Effects of rare earth cations doped for La site on the oxide ionic conductivity of LaGaO3-based perovskite type oxide

AU - Ishihara, Tatsumi

AU - Matsuda, Hideaki

AU - Takita, Yusaku

PY - 1995/7

Y1 - 1995/7

N2 - For the suppression of hole conduction in the high oxygen partial pressure range, effects of the addition of small amount of rare earth cations were investigated in this study with La0.8Sr0.2Ga0.8Mg0.2O3 - δ. It was found that the addition of small amount of rare earth cations for La site in LaGaO3 was effective for the suppression of hole conduction under high oxygen partial pressure, albeit the electrical conductivity decreased slightly. In particular, perovskite oxide of (La0.9Nd0.1)0.8Sr0.2Ga0.8Mg0.2O3 - δ exhibits almost pure oxide ionic conduction over the oxygen partial pressure from 1 to 10-21 atm, and the electrical conductivity attains the value of log (σ/S cm-1) = -0.5 at 1223 K.

AB - For the suppression of hole conduction in the high oxygen partial pressure range, effects of the addition of small amount of rare earth cations were investigated in this study with La0.8Sr0.2Ga0.8Mg0.2O3 - δ. It was found that the addition of small amount of rare earth cations for La site in LaGaO3 was effective for the suppression of hole conduction under high oxygen partial pressure, albeit the electrical conductivity decreased slightly. In particular, perovskite oxide of (La0.9Nd0.1)0.8Sr0.2Ga0.8Mg0.2O3 - δ exhibits almost pure oxide ionic conduction over the oxygen partial pressure from 1 to 10-21 atm, and the electrical conductivity attains the value of log (σ/S cm-1) = -0.5 at 1223 K.

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Effects of rare earth cations doped for La site on the oxide ionic conductivity of LaGaO₃-based perovskite type oxide

Abstract

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