Porosity-induced spin disorder in nanocrystalline inert-gas–condensed iron

Michels, A.; Elmas, M.; Doebrich, F.; Ames, M.; Markmann, J.; Sharp, M.; Eckerlebe, H.; Kohlbrecher, J.; Birringer, R.

Journalpaper

Porosity-induced spin disorder in nanocrystalline inert-gas–condensed iron

Abstract

We report magnetization and magnetic neutron scattering measurements on nanocrystalline Fe which was prepared by means of the inert-gas condensation technique. Depending on the compaction pressure applied during the synthesis procedure (0.5–1.8 GPa), the resulting Fe samples contain porosity with volume fractions between about 20–35%. We provide evidence that the spin disorder which is associated with porosity has a strong influence on magnetic properties, and it gives rise to a characteristic clover-leaf–shaped angular anisotropy in the elastic-magnetic-scattering cross-section.

DOI Link to Publication

URL: https://publications.hereon.de/id/27591/
Authors:Michels, A., Elmas, M., Doebrich, F., Ames, M., Markmann, J., Sharp, M., Eckerlebe, H., Kohlbrecher, J., Birringer, R.
Year:2009
In: Europhysics Letters
Volume:85
Pages:47003
Publisher:EDP Science, Les-Ulis
Type:Journalpaper
ISSN: 0295-5075
Cite as: Michels, A.; Elmas, M.; Doebrich, F.; Ames, M.; Markmann, J.; Sharp, M.; Eckerlebe, H.; Kohlbrecher, J.; Birringer, R.: Porosity-induced spin disorder in nanocrystalline inert-gas–condensed iron. In: Europhysics Letters. Vol. 85 (2009) 47003. (DOI: 10.1209/0295-5075/85/47003)