Abstract
The magnetisation was measured in plastically deformed 34.0 and 36.2 at.% Al-Fe alloys, and superlattice dislocations were observed by electron microscopy. At 34.0 at.% Al content, the spontaneous magnetisation increases considerably as a result of a slight plastic strain and has a broad maximum at about 200 K. At 36.2 at.% Al content, the magnetic susceptibility increases remarkably with plastic deformation and at the same time a spontaneous magnetisation appears and increases rapidly with decreasing temperature. The spontaneous magnetisation is discussed considering the atomic rearrangement due to superlattice dislocations. The change of magnetic properties is difficult to explain by local environment effects only.
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