First-order antiferromagnetic to ferromagnetic transition in Mn(Co,Fe)P probed by x-ray absorption experiments

The first-order antiferromagnetic to ferromagnetic transition taking place near to room temperature in MnCo0.53Fe0.47P has been investigated by x-ray absorption techniques: in the near edge region (XANES), in the extended energy range (EXAFS) and by using magnetic circular dichroism (XMCD). The abse...

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Bibliographic Details
Published in:Journal of physics. Conference series 2017-10, Vol.903 (1), p.12043
Main Authors: Guillou, F., Hen, A., Wilhelm, F., Rogalev, A.
Format: Article
Language:English
Subjects:
Antiferromagnetism
Cobalt
Crystal structure
Crystals
Dichroism
Ferromagnetism
Iron
Magnetic transitions
Manganese
Physics
Room temperature
X ray absorption
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Summary:The first-order antiferromagnetic to ferromagnetic transition taking place near to room temperature in MnCo0.53Fe0.47P has been investigated by x-ray absorption techniques: in the near edge region (XANES), in the extended energy range (EXAFS) and by using magnetic circular dichroism (XMCD). The absence of significant changes in the electronic and crystal structures across the transition are at odds with recent results obtained for the first-order magnetic transitions of the closely related Mn alloys, MnFe(P,Si,B) and MnCoGe. This points out that the microscopic mechanism responsible for the discontinuous antiferromagnetic to ferromagnetic transition in the Mn(Co,Fe)P system is intrinsically different from these latter prototypical examples.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/903/1/012043