Synthesis, morphology and color tone properties of the lanthanum substituted hematite

T. I. Bhuiyan, M. Nakanishi, Y. Kusano, T. Fujii, J. Takada, Y. Ikeda

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The polymeric complex method has been employed to investigate the effects of substitution by lanthanum into hematite powder on structures, morphology and color tone properties. X-ray diffraction measurements evidenced the existence of Fe2 - xLaxO3 at 1000 °C-1200 °C by shifting peaks to lower angles. At higher temperature, lattice parameters and cell volume were found to expand due to the incorporation of La3+ ion into the hematite in the range 301.98-303.87 Å3. Crystalline size decreased when increasing the amount of La3+ ion in the reaction process. Suppression of particle growth was observed by the Field Emission Scanning Electron Microscopy studies at higher temperatures. Brighter yellowish-red color than that of pure hematite was obtained and it grew into deeper color tone rapidly by increasing the amount of La3+ ion into the hematite.

Original languageEnglish
Pages (from-to)3774-3777
Number of pages4
JournalMaterials Letters
Volume61
Issue number17
DOIs
Publication statusPublished - Jul 1 2007

Keywords

  • Color tone
  • FESEM
  • Lanthanum substituted hematite
  • Polymeric complex method

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Synthesis, morphology and color tone properties of the lanthanum substituted hematite'. Together they form a unique fingerprint.

  • Cite this