Synthesis, structures and properties of the cerium doped hematite co-existing with CeO2

Tarequl Islam Bhuiyan, Makoto Nakanishi, Yoshihiro Kusano, Tatsuo Fujii, Jun Takada, Yasunori Ikeda

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Cerium doped hematite powders obtained by polymeric complex method following the hydrolysis of FeCl3 · 6H2O and Ce(NH4)2(NO3)6. X-ray diffraction pattern of cerium doped samples obtained at 1000°C̃ 1200°C for two hours in air revealed some solubility of cerium ion in α-Fe2O 3 over the composition range of 5%̃15 at% that were characterized by the shifting of X-ray diffraction peaks compared with the internal silicon standard. X-ray Photoelectron Spectra investigations revealed the existence of Ce3+ ion at higher temperature. Unit cell parameters were found to expand due to the incorporation of cerium ions into the hematite lattice. Field Emission Scanning Electron Microscopy studies showed that the growth of particles was suppressed in the appearance of cerium ions into the α-Fe2O3 lattice. Fe2-xCe xO3 exhibits much lower magnetization due to the incorporation of non-magnetic cerium ions into the α-Fe2O 3. Spectroscopy measurement evidenced that cerium doped hematite samples exhibited brighter yellowish red color tone than that of pure α-Fe2O3.

Original languageEnglish
Pages (from-to)112-118
Number of pages7
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume54
Issue number2
DOIs
Publication statusPublished - Feb 1 2007

Keywords

  • Cerium doped hematite
  • Color tone
  • Lattice parameter
  • Polymeric complex method
  • Spectrophotometer

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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