Improved oxygen ion conductivity of NdAlO3 perovskite-type oxide by doping with Ga

Tatsumi Ishihara; Hideaki Matsuda; Yukako Mizuhara; Yusaku Takita

doi:10.1016/0167-2738(94)90316-6

Improved oxygen ion conductivity of NdAlO₃ perovskite-type oxide by doping with Ga

Tatsumi Ishihara, Hideaki Matsuda, Yukako Mizuhara, Yusaku Takita

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

36 Citations (Scopus)

Abstract

Effects of Ga addition to NdAlO₃ on the oxygen ion conductivity were studied. Substitution of Ga to Al sites is effective for enhancing the oxygen ion conductivity of Nd_0.9Ca_0.1AlO₃ and the highest oxygen ion conduction was obtained at x=0.5 in Nd_0.9Ca_0.1Al_1-xGa_xO₃. Since the increased oxygen ion conduction by doping Ga suppressed the p-type semic onduction at high oxygen partial pressure, electrical conductivity was almost independent of the oxygen partial pressure in a range from P_O2=1 to 10^-20 atm. The oxygen ion conductivity of Nd_0.9Ca_0.1Al_0.1Ga_0.5O₃ at 1223 K is as high as log (σ/S cm^-)=-1.4, and furthermore, the oxide ion transference number is estimated to be almost 1.0 over a wide range of oxygen partial pressure and temperature.

Original language	English
Pages (from-to)	234-238
Number of pages	5
Journal	Solid State Ionics
Volume	70-71
Issue number	PART 1
DOIs	https://doi.org/10.1016/0167-2738(94)90316-6
Publication status	Published - Jan 1 1994
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(94)90316-6

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title = "Improved oxygen ion conductivity of NdAlO3 perovskite-type oxide by doping with Ga",

abstract = "Effects of Ga addition to NdAlO3 on the oxygen ion conductivity were studied. Substitution of Ga to Al sites is effective for enhancing the oxygen ion conductivity of Nd0.9Ca0.1AlO3 and the highest oxygen ion conduction was obtained at x=0.5 in Nd0.9Ca0.1Al1-xGaxO3. Since the increased oxygen ion conduction by doping Ga suppressed the p-type semic onduction at high oxygen partial pressure, electrical conductivity was almost independent of the oxygen partial pressure in a range from PO2=1 to 10-20 atm. The oxygen ion conductivity of Nd0.9Ca0.1Al0.1Ga0.5O3 at 1223 K is as high as log (σ/S cm-)=-1.4, and furthermore, the oxide ion transference number is estimated to be almost 1.0 over a wide range of oxygen partial pressure and temperature.",

author = "Tatsumi Ishihara and Hideaki Matsuda and Yukako Mizuhara and Yusaku Takita",

year = "1994",

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doi = "10.1016/0167-2738(94)90316-6",

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T1 - Improved oxygen ion conductivity of NdAlO3 perovskite-type oxide by doping with Ga

AU - Ishihara, Tatsumi

AU - Matsuda, Hideaki

AU - Mizuhara, Yukako

AU - Takita, Yusaku

PY - 1994/1/1

Y1 - 1994/1/1

N2 - Effects of Ga addition to NdAlO3 on the oxygen ion conductivity were studied. Substitution of Ga to Al sites is effective for enhancing the oxygen ion conductivity of Nd0.9Ca0.1AlO3 and the highest oxygen ion conduction was obtained at x=0.5 in Nd0.9Ca0.1Al1-xGaxO3. Since the increased oxygen ion conduction by doping Ga suppressed the p-type semic onduction at high oxygen partial pressure, electrical conductivity was almost independent of the oxygen partial pressure in a range from PO2=1 to 10-20 atm. The oxygen ion conductivity of Nd0.9Ca0.1Al0.1Ga0.5O3 at 1223 K is as high as log (σ/S cm-)=-1.4, and furthermore, the oxide ion transference number is estimated to be almost 1.0 over a wide range of oxygen partial pressure and temperature.

AB - Effects of Ga addition to NdAlO3 on the oxygen ion conductivity were studied. Substitution of Ga to Al sites is effective for enhancing the oxygen ion conductivity of Nd0.9Ca0.1AlO3 and the highest oxygen ion conduction was obtained at x=0.5 in Nd0.9Ca0.1Al1-xGaxO3. Since the increased oxygen ion conduction by doping Ga suppressed the p-type semic onduction at high oxygen partial pressure, electrical conductivity was almost independent of the oxygen partial pressure in a range from PO2=1 to 10-20 atm. The oxygen ion conductivity of Nd0.9Ca0.1Al0.1Ga0.5O3 at 1223 K is as high as log (σ/S cm-)=-1.4, and furthermore, the oxide ion transference number is estimated to be almost 1.0 over a wide range of oxygen partial pressure and temperature.

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JO - Solid State Ionics

JF - Solid State Ionics

IS - PART 1

ER -

Improved oxygen ion conductivity of NdAlO₃ perovskite-type oxide by doping with Ga

Abstract

All Science Journal Classification (ASJC) codes

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