Mössbauer and XRD investigations of layered double hydroxides (LDHs) with varying Mg/Fe ratios

Mónika Sipiczki, Erno Kuzmann, Zoltán Homonnay, József Megyeri, Krisztina Kovács, István Pálinkó, Pál Sipos

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The effects of the Mg(II)/Fe(III) ratio on the structure and Fe microenvironments in MgFe LDH substances were investigated. The LDHs were prepared by the co-precipitation method with Mg(II)/Fe(III) ratios from 2:1 to 6:1. The materials were characterized by 57Fe Mössbauer spectroscopy and powder X-ray diffractometry. The 57Fe Mössbauer spectra exhibited asymmetric doublet corresponding to high-spin Fe(III) microenvironments in all LDH structure. It was found that the quadrupole splitting decreased with increasing Mg(II)/Fe(III)ratio reflecting change in the electric field gradient due to the incorporation of different amounts of iron into the Mg-containing layers.

Original languageEnglish
Pages (from-to)145-149
Number of pages5
JournalHyperfine Interactions
Volume217
Issue number1-3
DOIs
Publication statusPublished - Jan 1 2013

Keywords

  • Fe Mössbauer spectroscopy
  • Mg/Fe ratios
  • MgFe-LDH
  • XRD measurements

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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