Open AccessStructural changes of Fe precipitates in annealed Fe‐Al 2 O 3 films
Author(s) -
Martins Alves M. C.,
Tolentino H.,
Teixeira S. R.,
Flores W. H.,
Boff M. A. S.,
Casarin F.,
Schmidt J. E.
Publication year - 1999
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049598017324
Subject(s) - materials science , crystallography , annealing (glass) , metallurgy , chemistry
We report on the structural changes of Fe-AI203 films deposited both co-evaporated and multilayered samples at room temperature and subsequently annealed at 400"C during 5h. Our results suggest that the Fe precipitates in A1203 matrix are forming disordered nanoparticles. The discontinuous multilayers presents rather small evolution under annealing whilst the coevaporated films evolves from an ill ordered to a much better ordered bcc-structure. All samples present a similar superparamagnetic behavior.