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Article Dans Une Revue Journal of Physics: Condensed Matter Année : 2013

Ferrimagnetism in GdCo12-xFexB6

Résumé

The effects of iron substitution on the structural and magnetic properties of the GdCo12-xFexB6 (0 <= x <= 3) series of compounds have been studied. All of the compounds form in the rhombohedral SrNi12B6-type structure and exhibit ferrimagnetic behaviour below room temperature: T-C decreases from 158 K for x = 0 to 93 K for x = 3. Gd-155 Mossbauer spectroscopy indicates that the easy magnetization axis changes from axial to basal-plane upon substitution of Fe for Co. This observation has been confirmed using neutron powder diffraction. The axial to basal-plane transition is remarkably sensitive to the Fe content and comparison with earlier Fe-57-doping studies suggests that the boundary lies below x = 0.1.
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Dates et versions

hal-00954671 , version 1 (03-03-2014)

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Leopold Diop, Olivier Isnard, Nicolas R. Lee-Hone, Dominic H. Ryan, J. M. Cadogan. Ferrimagnetism in GdCo12-xFexB6. Journal of Physics: Condensed Matter, 2013, 25 (31), pp.316001. ⟨10.1088/0953-8984/25/31/316001⟩. ⟨hal-00954671⟩

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