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This study is focused on the possibility to extend the use of the first-orderreversal curve (FORC) diagram method to rate-dependent hysteresis. The FORCsfor an amorphous magnetic wire was measured with an inductometric experimentalsetup in which the field-rate was maintained constant. The FORC experiment wasperformed for four different field-rates. As it is known, to obtainquantitative information on the magnetization process during the FORC processwe need a model able to simulate as close as possible the experimental FORCdiagrams. In this case, we have developed and implemented a model based on thehypothesis that the magnetization processes in this kind of materials aremainly due to the movement of a domain wall between the central domains of thewire. The differential equation of the domain wall movement is able to give aremarkably accurate description of the experimental FORC diagrams. Theexperimental FORCs, the FORC susceptibility diagram and the classical FORCdiagram show however a number of details that the model is not able todescribe. In each such case one discuss the possible physical cause of theobserved behavior. As the magnetic wires are analyzed in many laboratoriesaround the world for a wide variety of applications (essentially involving thecontrol of the domain wall movement) we consider that our study offers to theseresearchers a valuable new tool.

Kinetic effects observed in dynamic FORCs of magnetic wires: Experiment and theoretical description