In situ neutron diffraction study on fast oxide ion conductor LaGaO 3-based perovskite compounds

Masahiro Kajitani, Motohide Matsuda, Akinori Hoshikawa, Stefanus Harjo, Takashi Kamiyama, Toru Ishigaki, Fujio Izumi, Michihiro Miyake

Research output: Contribution to journalArticle

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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 languageEnglish
Pages (from-to)4235-4243
Number of pages9
JournalChemistry of Materials
Volume17
Issue number16
DOIs
Publication statusPublished - Aug 9 2005

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Neutron diffraction
Perovskite
Oxides
Crystal structure
Ions
Neutron powder diffraction
Temperature
perovskite

ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)

Cite this

Kajitani, M., Matsuda, M., Hoshikawa, A., Harjo, S., Kamiyama, T., Ishigaki, T., ... Miyake, M. (2005). In situ neutron diffraction study on fast oxide ion conductor LaGaO 3-based perovskite compounds. Chemistry of Materials, 17(16), 4235-4243. https://doi.org/10.1021/cm050597n

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 journalArticle

Kajitani, M, Matsuda, M, Hoshikawa, A, Harjo, S, Kamiyama, T, Ishigaki, T, Izumi, F & Miyake, M 2005, 'In situ neutron diffraction study on fast oxide ion conductor LaGaO 3-based perovskite compounds', Chemistry of Materials, vol. 17, no. 16, pp. 4235-4243. https://doi.org/10.1021/cm050597n
Kajitani M, Matsuda M, Hoshikawa A, Harjo S, Kamiyama T, Ishigaki T et al. In situ neutron diffraction study on fast oxide ion conductor LaGaO 3-based perovskite compounds. Chemistry of Materials. 2005 Aug 9;17(16):4235-4243. https://doi.org/10.1021/cm050597n
Kajitani, Masahiro ; Matsuda, Motohide ; Hoshikawa, Akinori ; Harjo, Stefanus ; Kamiyama, Takashi ; Ishigaki, Toru ; Izumi, Fujio ; Miyake, Michihiro. / In situ neutron diffraction study on fast oxide ion conductor LaGaO 3-based perovskite compounds. In: Chemistry of Materials. 2005 ; Vol. 17, No. 16. pp. 4235-4243.
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