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

T. I. Bhuiyan, Makoto Nakanishi, Y. Kusano, Tatsuo 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 2007

Fingerprint

Lanthanum
Hematite
hematite
lanthanum
Color
color
Ions
synthesis
ions
Field emission
Powders
Lattice constants
field emission
lattice parameters
Substitution reactions
retarding
substitutes
Crystalline materials
X ray diffraction
Temperature

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Synthesis, morphology and color tone properties of the lanthanum substituted hematite. / Bhuiyan, T. I.; Nakanishi, Makoto; Kusano, Y.; Fujii, Tatsuo; Takada, J.; Ikeda, Y.

In: Materials Letters, Vol. 61, No. 17, 07.2007, p. 3774-3777.

Research output: Contribution to journalArticle

Bhuiyan, T. I. ; Nakanishi, Makoto ; Kusano, Y. ; Fujii, Tatsuo ; Takada, J. ; Ikeda, Y. / Synthesis, morphology and color tone properties of the lanthanum substituted hematite. In: Materials Letters. 2007 ; Vol. 61, No. 17. pp. 3774-3777.
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