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Investigation of the anomalous magnetic properties due to the ordering process in iron-rich aluminum alloys

Authors
Journal
Journal of Physics and Chemistry of Solids
0022-3697
Publisher
Elsevier
Publication Date
Volume
23
Issue
6
Identifiers
DOI: 10.1016/0022-3697(62)90528-0
Disciplines
  • Physics

Abstract

Abstract The relationship between anomalous magnetic properties and the atomic ordering process has been studied in the iron-aluminum alloys near the composition of Fe 3Al. The temperature dependence of magnetization for different cooling rates and different magnetizing fields has been determined. The so-called “double Curie point” phenomenon observed first by Sykes and Evans, can be interpreted on the basis of our investigations as due to the appearance of an ordered, initially non-magnetic dispersely distributed phase in the disordered ferromagnetic phase. This mechanism seems to be confirmed also by investigations of other authors. The existence of the Fe 13Al 3 ordered structure first observed by Taylor and Jones with X-ray diffraction methods can be inferred also from the temperature dependence of the magnetization at slow cooling.

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