Convergent-beam electron diffraction study of the low-temperature ferromagnetic insulator phase of La1-xSrxMnO3 (x = 0.11, 0.12)

Kenji Tsuda, Michiyoshi Tanaka, Kazuma Hirota, Yasuo Endoh

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13 Citations (Scopus)

Abstract

The low-temperature ferromagnetic insulator (FMI) phase of La1-xSrxMnO3 (x = 0.11.0.12) was investigated by convergent-beam electron diffraction (CBED) together with selected-area electron diffraction (SAED). We have revealed that the FMI phase belongs to the triclinic space group P1̄, and has a unit cell of ∼2ac x 46c x 4cc, where ac, bc, cc are lattice parameters in the pseudocubic perovskite notation. These findings indicate that the FMI phase is neither the re-entrant phase of the high temperature phase (∼√2ac x 2√2bc x 2cc) as reported by Kawano et al. nor the polaron-ordering phase with a unit cell of (∼2ac x 2bc x 4cc) as proposed by Yamada et al.

Original languageEnglish
Pages (from-to)1010-1014
Number of pages5
Journaljournal of the physical society of japan
Volume70
Issue number4
DOIs
Publication statusPublished - 2001 Apr

Keywords

  • Convergent-beam electron diffraction
  • Perovskite manganite
  • Space group determination
  • Structural phase transformation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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