MAGHEMITE IN BASALT STUDIED BY MOSSBAUER-SPECTROSCOPY IN EXTERNAL MAGNETIC-FIELD

Authors
HELGASON O GUNNLAUGSSON HP STEINTHORSSON S KOCH CB MORUP S
Citation
O. Helgason et al., MAGHEMITE IN BASALT STUDIED BY MOSSBAUER-SPECTROSCOPY IN EXTERNAL MAGNETIC-FIELD, Hyperfine interactions, 91(1-4), 1994, pp. 583-587
Citations number
5
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
Hyperfine interactions → ACNP
ISSN journal
03043843
Volume
91
Issue
1-4
Year of publication
1994
Pages
583 - 587
Database
ISI
SICI code
0304-3843(1994)91:1-4<583:MIBSBM>2.0.ZU;2-N
Abstract
In the present study, we investigate the feasibility of detecting and determining the presence of maghemite in rock samples, by obtaining Mo ssbauer spectra in an external magnetic field of 1.6 T at room tempera ture. The interaction of the external magnetic field and the magnetic moments of the sublattices will induce differential shifts in the peak positions. By this method, we can assign some lower limit of the amou nt of maghemite in the sample. The results are compared with a model f or a mixture of maghemite and stoichiometric magnetite.