Transmission Mössbauer and FTIR spectroscopic studies of binary nickel(II)-iron(III) hydroxide systems
- Resource Type
- Article
- Authors
- Kamnev, Alexander A.; Ristić, Mira; Angelov, Venelin
- Source
- Journal of Molecular Structure; April 1995, Vol. 349 Issue: 1 p77-80, 4p
- Subject
- Language
- ISSN
- 00222860
Transmission Mössbauer and Fourier transform infrared spectroscopic data obtained for binary nickel(II)-iron(III) hydroxide systems in a broad range of compositions (3 to 60 at.% Fe(Ni+Fe)) are compared. Structural transformations of the samples and their surface layers are considered, depending on their bulk gross compositions. The formation of a nickel ferrite precursor is shown to be promoted in the crystallites surface layers even at much lower gross Fe-to-Ni ratios than that in NiFe2O4owing to surface enrichment with iron, as confirmed by Auger electron spectroscopic analyses.