Dielectric anomaly and structural phase transitions in YFe 2O4-δ

Y. Horibe, K. Kishimoto, S. Mori, N. Ikeda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We examined structural changes related to the charge ordering (CO) in the temperature window between 100K and room temperature (RT) in YFe 2O4-δ by transmission electron microscopy. Characteristic diffuse scattering elongated along the [001] direction through the (1/3 1/3 0)-type reciprocal positions was found at RT, which is related to nano-sized domains due to the CO. In addition, we found the presence of the superlattice structures characterized by the (1/4 1/4 0)-type modulation vector at 150K and by the (0 1/2 0)-type modulation vector at 200 K. The changes in the superlattice structures as a function of the temperature should be strongly related to the dielectric anomalies in YFe2O4-δ.

Original languageEnglish
Pages (from-to)151-157
Number of pages7
JournalIntegrated Ferroelectrics
Volume67
DOIs
Publication statusPublished - Dec 1 2004
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Ceramics and Composites
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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