57Fe Mossbauer, XRD and DTA study of the crystallization behavior of calcium aluminate glass containing iron(III)

T. Nishida, K. Goto, S. Kubuki, T. Tamaki

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1 Citation (Scopus)

Abstract

57Fe Mossbauer spectroscopy was applied to the crystallization study of IR-transmitting calcium aluminate glass, 60CaO·32Al2O3·5Fe2O3·3Eu2O3, in which Fe(III) atoms occupy tetrahedral Al(III) sites. Heat treatment of calcium aluminate glass below and above the crystallization temperature causes the formation of mayenite, 12CaO·7Al2O3, and brownmillerite, 4CaO·Al2O3·Fe2O3, respectively. Mossbauer spectra of the glass ceramics indicate that Fe(III) atoms substitute Al(III) sites, having less covalent Fe(III)-O bonds and more distorted Fe(III)O4 tetrahedra than they do in the original glass. DTA revealed that crystallization of calcium aluminate glass is triggered by simultaneous cleavage of Ca-O and Al-O bonds.

Original languageEnglish
Pages (from-to)51-56
Number of pages6
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume246
Issue number1
DOIs
Publication statusPublished - Oct 30 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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