FORC differential dissection of soft biphase magnetic ribbons

•FORC dissection is used to discriminate the magnetic phases in hard-soft ferromagnets.•An interpretation of the FORC diagram without reference to Preisach plane is proposed.•The method succeeds in explaining the negative regions of the complex FORC diagrams.•Bi-phase soft ribbons have been used to...

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Bibliographic Details
Published in:Journal of alloys and compounds 2014-12, Vol.615, p.S276-S279
Main Authors: Martínez-García, J.C., Rivas, M., Lago-Cachón, D., García, J.A.
Format: Article
Language:English
Subjects:
Alloys
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Crystallization
Dissection
Exact sciences and technology
Ferromagnetism
Hardness
Magnetic measurements
Magnetic properties and materials
Magnetically ordered materials
Metals and alloys
Other ferromagnetic metals and alloys
Phases
Physics
Ribbons
Studies of specific magnetic materials
Switching
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Summary:•FORC dissection is used to discriminate the magnetic phases in hard-soft ferromagnets.•An interpretation of the FORC diagram without reference to Preisach plane is proposed.•The method succeeds in explaining the negative regions of the complex FORC diagrams.•Bi-phase soft ribbons have been used to illustrate the proposed method.•The two magnetic phases are positively coupled both internally and mutually. The problem of unravelling the information contained in First Order Reversal Curves (FORC) has become in the recent years a discussion matter because the commonly used technique of assimilating the FORC diagrams to the Preisach plane is not satisfactory in many cases. This is particularly so when the magnetic interactions within the system are strong, comparable or larger than the switching fields, as in soft ferromagnets. In this work, the authors present an interpretation of this technique as a differential tool for the study of magnetic interactions without referring to Preisach models. It allows discriminating the magnetic phases of the system as well as the dominant interactions. The proposed FORC differential dissection is applied to partially crystallized ribbons of the Co69B12Si12Fe4Mo2Ni1 alloy, identifying two magnetic phases with close but different magnetic hardness which are positively coupled both internally and mutually.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2014.01.080