Structural properties of Fe-doped lanthanum gallate

Kazuhiro Mori, Toshiharu Fukunaga, Koji Shibata, Kenji Iwase, Stefanus Harjo, Akinori Hoshikawa, Keiji Itoh, Takashi Kamiyama, Toru Ishigaki

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7 Citations (Scopus)

Abstract

Structural characteristics of Fe-doped LaGaO3-δ were studied by differential scanning calorimeter, neutron and high-temperature X-ray powder diffraction measurements. It was found that a phase transition temperature increases in proportion to an amount of Fe. The crystal structure could be described as a low-temperature orthorhombic phase (Pnma) and a high-temperature rhombohedral one (R3c), respectively. Lattice parameters and bond lengths between M (=Ga/Fe) and O are monotonically expand with increasing Fe-content on both orthorhombic and rhombohedral phases. This means that a substitution of Ga3+ with Fe3+ leads to an electronic configuration of t2g3eg2 (high-spin state, HS).

Original languageEnglish
Pages (from-to)147-155
Number of pages9
JournalPhysica B: Condensed Matter
Volume352
Issue number1-4
DOIs
Publication statusPublished - Oct 30 2004
Externally publishedYes

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Keywords

  • DSC
  • High-spin state
  • LaGaO
  • Neutron diffraction
  • Phase transition
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Mori, K., Fukunaga, T., Shibata, K., Iwase, K., Harjo, S., Hoshikawa, A., Itoh, K., Kamiyama, T., & Ishigaki, T. (2004). Structural properties of Fe-doped lanthanum gallate. Physica B: Condensed Matter, 352(1-4), 147-155. https://doi.org/10.1016/j.physb.2004.07.004