Mossbauer spectra of ferrihydride: superferromagnetic interactions and anisotropy local energy
- 24 February 1992
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 4 (8) , 2073-2077
- https://doi.org/10.1088/0953-8984/4/8/020
Abstract
The Mossbauer spectra of a sample of synthetic ferrihydrite have been investigated in the 26-220 K temperature range in order to identify the mechanism giving rise to the relaxation times. The results show that the temperature dependence of the relaxation times is in accordance with the Vogel-Fulcher law. This indicates that the magnetic interaction between the crystallites is significant. From the temperature dependence of the mean magnetic field under TB the authors also argue for a strong correlation between the spatial orientations of neighbouring clusters.Keywords
This publication has 11 references indexed in Scilit:
- The Mössbauer spectrum of “well”-crystallized ferrihydriteJournal of Magnetism and Magnetic Materials, 1988
- The influence of crystallinity on magnetic ordering in natural ferrihydritesClay Minerals, 1988
- Asymmetric doublet in Mössbauer spectra of superparamagnetic goethiteHyperfine Interactions, 1988
- Mossbauer spectra in paramagnetic relaxing systemsReports on Progress in Physics, 1986
- A Mössbauer study of magnetic relaxation and the Morin transition in amorphous and crystalline iron oxide systemsJournal of Magnetism and Magnetic Materials, 1986
- Magnetic properties of ferrihydriteHyperfine Interactions, 1986
- Effect of Heating on Microcrystalline Synthetic GoethiteClays and Clay Minerals, 1986
- Magnetic coupling among spinel iron oxide microparticles by Mössbauer spectroscopyJournal de Physique Lettres, 1985
- The theory of the Vogel-Fulcher law of spin glassesPhysics Letters A, 1981
- Mineralogical constitution of colloidal “hydrous ferric oxides”Journal of Colloid and Interface Science, 1967