Crystallographic features of La1-xSrxMO3 with M = Cr and Fe in the vicinity of the R3̄c/Pbnm phase boundary

M. Arao, H. Shindo, T. Asada, Y. Koyama

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Crystallographic features of La1-xSrxMO3 with M=Cr and Fe in the vicinity of the R3̄c/Pbnm phase boundary have been examined mainly at room temperature by transmission electron microscopy. When the Sr content x increases from x=0, the change in crystal structure from Pbnm to R3̄c was confirmed to occur at room temperature in La1-xSrxCrO3 around x=0.2. In La1-xSrxFeO3, on the other hand, the incommensurate phase was found to exist between the Pbnm and the R3̄c phases. The analysis of the electron diffraction patterns obtained in the work indicated that the normal structure of the incommensurate structure and the direction of the modulation could, respectively, be identified as the Pbnm structure and one of the 〈323〉 directions. It was also suggested that the rotational displacement of the oxygen octahedra involved in the Pbnm structure should be modulated in the incommensurate structure.

Original languageEnglish
Pages (from-to)137-141
Number of pages5
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
Publication statusPublished - 2002 Oct 1


  • Incommensurate structure
  • LaSrCrO
  • LaSrFeO
  • R3̄c-to-Pbnm structural phase transition
  • Transmission electron microscopy

ASJC Scopus subject areas

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


Dive into the research topics of 'Crystallographic features of La<sub>1-x</sub>Sr<sub>x</sub>MO<sub>3</sub> with M = Cr and Fe in the vicinity of the R3̄c/Pbnm phase boundary'. Together they form a unique fingerprint.

Cite this