HEATED NONTRONITE - POSSIBLE RELATIONS TO THE MAGNETIC PHASE IN THE MARTIAN SOIL

Authors
HVIID SF AGERKVIST DP OLSEN M KOCH CB MADSEN MB
Citation
Sf. Hviid et al., HEATED NONTRONITE - POSSIBLE RELATIONS TO THE MAGNETIC PHASE IN THE MARTIAN SOIL, Hyperfine interactions, 91(1-4), 1994, pp. 529-533
Citations number
7
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
529 - 533
Database
ISI
SICI code
0304-3843(1994)91:1-4<529:HN-PRT>2.0.ZU;2-9
Abstract
We have modified the iron-containing layer silicate nontronite into a magnetic sample by heat treatment at 900 degrees C for 5 minutes and s tudied the properties of the sample by Mossbauer spectroscopy, X-ray p owder diffraction and infrared spectroscopy. Mossbauer spectra obtaine d in applied magnetic fields show that the majority of the iron is sit uated in a ferrimagnetic phase, related to maghemite.