[en] 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.
Disciplines :
Physique
Identifiants :
UNILU:UL-ARTICLE-2010-467
Auteur, co-auteur :
MICHELS, Andreas ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Elmas, M.
Döbrich, Frank ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Ames, M.
Markmann, J.
Sharp, M.
Eckerlebe, H.
Kohlbrecher, J.
Birringer, R.
Langue du document :
Anglais
Titre :
Porosity-induced spin disorder in nanocrystalline inert-gas condensed iron
