Mössbauer studies on ultraporous Fe-Oxide/SiO2 aerogel

A. Lančok, K. Závěta, M. Popovici, C. Savii, M. Gich, A. Roig, E. Molins, K. Barčová

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Scopus)

Abstract

Magnetic aerogels with very low volume density of ~0.2 g/cm3 were prepared by sol-gel method and supercritical drying. The resulting materials were monolithic and displayed high surface area. By X-ray diffraction and Mössbauer spectroscopy the crystalline phase formed inside the mesopores of the SiO2 matrix was identified as a spinel iron oxide. Comparison of the magnetic measurements with Mössbauer spectra at various temperatures contributed to the elucidation of the magnetic state of this nanocomposite system with restricted magnetic interactions, in particular its transition to a superparamagnetic state. © Springer Science + Business Media B.V. 2006.
Original languageEnglish
Pages (from-to)203-208
JournalHyperfine Interactions
Volume165
Issue number1-4
DOIs
Publication statusPublished - 1 Sep 2005

Keywords

  • Aerogels
  • Fe O 2 3
  • Mössbauer spectroscopy
  • Nanoparticles
  • Superparamagnetic state

Fingerprint

Dive into the research topics of 'Mössbauer studies on ultraporous Fe-Oxide/SiO2 aerogel'. Together they form a unique fingerprint.

Cite this