Temperature and magnetic field dependence of the coexistent phases in La1-xCaxMnO3+δ (x = 0.47, 0.49)

Yousuke Watanabe, Kohki Takahashi, Satoshi Awaji, Kazuo Watanabe, Hiroyuki Fujishiro, Manabu Ikebe

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

X-ray diffraction measurements under high and low temperature, and magnetic field have been performed for the doped La1-xCaxMnO 3+δ polycrystals to clarify the coexistent phases and their structures around the composition of x ∼ 0.5. By measurements at high temperature, the transition from a Pnma to an Imma space group symmetry phase has been firstly observed in this system at the temperature between 500°C and 600°C. At low temperature, the importance of the measurement of (131) reflection is noticed and the phase fraction of two similar Pnma phases with ferromagnetic and anti-ferromagnetic states is determined. It is found that the application of the magnetic field by 5 T and the slight change of the composition x by 0.02 remarkably affect this phase fraction.

Original languageEnglish
Pages (from-to)817-821
Number of pages5
Journaljournal of the physical society of japan
Volume72
Issue number4
DOIs
Publication statusPublished - 2003 Apr 1

Keywords

  • CMR
  • Imma
  • Manganites
  • Perovskites
  • Pnma
  • X-ray diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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