Doping effect on crystal structure of fast oxide ion conductor LaGaO 3-based perovskite compounds

Masahiro Kajitani; Motohide Matsuda; Akinori Hoshikawa; Takashi Kamiyama; Fujio Izumi; Michihiro Miyake

doi:10.4028/0-87849-411-1.227

Doping effect on crystal structure of fast oxide ion conductor LaGaO ₃-based perovskite compounds

Masahiro Kajitani, Motohide Matsuda, Akinori Hoshikawa, Takashi Kamiyama, Fujio Izumi, Michihiro Miyake

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

3 Citations (Scopus)

Abstract

Doping effects of Sr and/or Mg on the crystal structures of LaGaO ₃ perovskites were investigated. The doping with Mg into Ga-site in LaGaO₃ led to structural change from the orthorhombic primitive lattice (Pbnm) to the orthorhombic body-centered lattice (Ibmm) at room temperature. The orthorhombic cell (Ibmm) of LaGa_0.9Mg _0.1O_2.95 changed to the monoclinic (I2/a) by doping with Sr into La site. Neutron powder diffraction analyses revealed that these compounds had GaO₆ octahedral tilt. The GaO₆ octahedral tilt angles were reduced with doping with Sr and/or Mg.

Original language	English
Pages (from-to)	227-230
Number of pages	4
Journal	Key Engineering Materials
Volume	320
DOIs	https://doi.org/10.4028/0-87849-411-1.227
Publication status	Published - Jan 1 2006

Keywords

Doping Effect
Lanthanum Gallate
Neutron Diffraction
Oxide Ion Conductor
Perovskite

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

Access to Document

10.4028/0-87849-411-1.227

Cite this

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title = "Doping effect on crystal structure of fast oxide ion conductor LaGaO 3-based perovskite compounds",

abstract = "Doping effects of Sr and/or Mg on the crystal structures of LaGaO 3 perovskites were investigated. The doping with Mg into Ga-site in LaGaO3 led to structural change from the orthorhombic primitive lattice (Pbnm) to the orthorhombic body-centered lattice (Ibmm) at room temperature. The orthorhombic cell (Ibmm) of LaGa0.9Mg 0.1O2.95 changed to the monoclinic (I2/a) by doping with Sr into La site. Neutron powder diffraction analyses revealed that these compounds had GaO6 octahedral tilt. The GaO6 octahedral tilt angles were reduced with doping with Sr and/or Mg.",

keywords = "Doping Effect, Lanthanum Gallate, Neutron Diffraction, Oxide Ion Conductor, Perovskite",

author = "Masahiro Kajitani and Motohide Matsuda and Akinori Hoshikawa and Takashi Kamiyama and Fujio Izumi and Michihiro Miyake",

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AU - Kajitani, Masahiro

AU - Matsuda, Motohide

AU - Hoshikawa, Akinori

AU - Kamiyama, Takashi

AU - Izumi, Fujio

AU - Miyake, Michihiro

PY - 2006/1/1

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N2 - Doping effects of Sr and/or Mg on the crystal structures of LaGaO 3 perovskites were investigated. The doping with Mg into Ga-site in LaGaO3 led to structural change from the orthorhombic primitive lattice (Pbnm) to the orthorhombic body-centered lattice (Ibmm) at room temperature. The orthorhombic cell (Ibmm) of LaGa0.9Mg 0.1O2.95 changed to the monoclinic (I2/a) by doping with Sr into La site. Neutron powder diffraction analyses revealed that these compounds had GaO6 octahedral tilt. The GaO6 octahedral tilt angles were reduced with doping with Sr and/or Mg.

AB - Doping effects of Sr and/or Mg on the crystal structures of LaGaO 3 perovskites were investigated. The doping with Mg into Ga-site in LaGaO3 led to structural change from the orthorhombic primitive lattice (Pbnm) to the orthorhombic body-centered lattice (Ibmm) at room temperature. The orthorhombic cell (Ibmm) of LaGa0.9Mg 0.1O2.95 changed to the monoclinic (I2/a) by doping with Sr into La site. Neutron powder diffraction analyses revealed that these compounds had GaO6 octahedral tilt. The GaO6 octahedral tilt angles were reduced with doping with Sr and/or Mg.

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KW - Neutron Diffraction

KW - Oxide Ion Conductor

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