Low-temperature structural phase transitions in rare earths substituted calcium manganese oxides [Ca2-xLnxMnO4, where Ln=Nd, Sm-Lu and Y]

Junichi Takahashi, Naoki Kamegashira

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6 Citations (Scopus)

Abstract

The structural phase transitions of Ca2-xLnxMnO4 (Ln=Nd, Sm-Lu and Y) were investigated by powder X-ray diffraction in the temperature range 10-1000 K. The maximum amount of the substitution, x, for the formation of the single phase had a tendency to decrease with decreasing ionic radii of rare earths. The new type of orthorhombic phase with a distortion along [100] direction of the undistorted tetragonal phase was found for Ln=Nd, Sm, Lu and Y with x=0.2. The low temperature tetragonal phase was observed in the case of Ln=Sm with x=0.3.

Original languageEnglish
Pages (from-to)451-460
Number of pages10
JournalMaterials Research Bulletin
Volume28
Issue number5
DOIs
Publication statusPublished - 1993 May
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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