Abstract
The crystal structures of LaGaO3, LaGa0.9Mg 0.1O2.95, and La0.9Sr0.1Ga 0.9Mg0.1O2.9 have been investigated by high-temperature neutron powder diffraction in order to clarify a mechanism for high oxide ion conduction properties in LaGaO3-based compounds. Parent phase LaGaO3 crystallized in the orthorhombic (Pbnm) up to 150°C and the rhombohedral (R3c) at between 160 and 800 °C. LaGa 0.9Mg0.1O2.95 crystallized in the orthorhombic (Ibmm) up to 340°C and the rhombohedral (R3̄c) at between 350 and 800°C. On the other hand, La0.9Sr0.1Ga 0.9Mg0.1O2.9 crystallized in the monoclinic (I2/a) up to 400°C and the rhombohedral (R3̄c) at between 410 and 800°C. The correlations between the crystal structures and conduction properties of LaGaO3-based materials were discussed on the basis of the analytical results.
| Original language | English |
|---|---|
| Pages (from-to) | 4235-4243 |
| Number of pages | 9 |
| Journal | Chemistry of Materials |
| Volume | 17 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - Aug 9 2005 |
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ASJC Scopus subject areas
- Materials Chemistry
- Materials Science(all)
Cite this
In situ neutron diffraction study on fast oxide ion conductor LaGaO 3-based perovskite compounds. / Kajitani, Masahiro; Matsuda, Motohide; Hoshikawa, Akinori; Harjo, Stefanus; Kamiyama, Takashi; Ishigaki, Toru; Izumi, Fujio; Miyake, Michihiro.
In: Chemistry of Materials, Vol. 17, No. 16, 09.08.2005, p. 4235-4243.Research output: Contribution to journal › Article
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TY - JOUR
T1 - In situ neutron diffraction study on fast oxide ion conductor LaGaO 3-based perovskite compounds
AU - Kajitani, Masahiro
AU - Matsuda, Motohide
AU - Hoshikawa, Akinori
AU - Harjo, Stefanus
AU - Kamiyama, Takashi
AU - Ishigaki, Toru
AU - Izumi, Fujio
AU - Miyake, Michihiro
PY - 2005/8/9
Y1 - 2005/8/9
N2 - The crystal structures of LaGaO3, LaGa0.9Mg 0.1O2.95, and La0.9Sr0.1Ga 0.9Mg0.1O2.9 have been investigated by high-temperature neutron powder diffraction in order to clarify a mechanism for high oxide ion conduction properties in LaGaO3-based compounds. Parent phase LaGaO3 crystallized in the orthorhombic (Pbnm) up to 150°C and the rhombohedral (R3c) at between 160 and 800 °C. LaGa 0.9Mg0.1O2.95 crystallized in the orthorhombic (Ibmm) up to 340°C and the rhombohedral (R3̄c) at between 350 and 800°C. On the other hand, La0.9Sr0.1Ga 0.9Mg0.1O2.9 crystallized in the monoclinic (I2/a) up to 400°C and the rhombohedral (R3̄c) at between 410 and 800°C. The correlations between the crystal structures and conduction properties of LaGaO3-based materials were discussed on the basis of the analytical results.
AB - The crystal structures of LaGaO3, LaGa0.9Mg 0.1O2.95, and La0.9Sr0.1Ga 0.9Mg0.1O2.9 have been investigated by high-temperature neutron powder diffraction in order to clarify a mechanism for high oxide ion conduction properties in LaGaO3-based compounds. Parent phase LaGaO3 crystallized in the orthorhombic (Pbnm) up to 150°C and the rhombohedral (R3c) at between 160 and 800 °C. LaGa 0.9Mg0.1O2.95 crystallized in the orthorhombic (Ibmm) up to 340°C and the rhombohedral (R3̄c) at between 350 and 800°C. On the other hand, La0.9Sr0.1Ga 0.9Mg0.1O2.9 crystallized in the monoclinic (I2/a) up to 400°C and the rhombohedral (R3̄c) at between 410 and 800°C. The correlations between the crystal structures and conduction properties of LaGaO3-based materials were discussed on the basis of the analytical results.
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U2 - 10.1021/cm050597n
DO - 10.1021/cm050597n
M3 - Article
VL - 17
SP - 4235
EP - 4243
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 16
ER -