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Updated: Jun 3, 2026

Sputter Growth and Characterization of Metamagnetic B2-ordered FeRh Epilayers
Published on: October 5, 2013
Symmetry-induced collapse of ferromagnetism at the α-ε phase transition in iron
Pierre Tolédano1, Hannelore Katzke, Denis Machon
1Physique des Systèmes Complexes, Université de Picardie, Amiens, France. pierre.toledano@wanadoo.fr
Abstract:
The magnetostructural bcc-to-hcp phase transition in iron is analysed theoretically in the framework of the Landau theory of phase transitions. In contrast to recent interpretations which emphasize the driving role of magnetism at the transition, the collapse of the ferromagnetic order in ε-Fe is interpreted as resulting from the large spontaneous strains and the magnitude of the displacive order-parameter involved in the Burgers reconstructive transition mechanism. It yields a direct first-order transition from the ferromagnetic α-phase to the non-magnetic ε-phase, without going across an intermediate magnetic structure.
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