Angular Preisach analysis of Hysteresis loops and FMR lineshapes of ferromagnetic nanowire arrays

TL;DR

This paper applies Preisach analysis to hysteresis loops and FMR lineshapes of ferromagnetic nanowire arrays, revealing angular dependencies that could enhance magnetic sensing technologies.

Contribution

It extends Preisach analysis to FMR lineshapes using parameters from hysteresis loops, highlighting the need for different interaction distributions to explain experimental data.

Findings

Angular dependence of hysteresis loops and FMR linewidths.

Different interaction/coercivity distributions are needed for FMR analysis.

Potential for angle sensing devices competing with AMR and GMR technologies.

Abstract

Preisach analysis is applied to the study of hysteresis loops measured for different angles between the applied magnetic field and the common axis of ferromagnetic Nickel nanowire arrays. When extended to Ferromagnetic Resonance (FMR) lineshapes, with same set of parameters extracted from the corresponding hysteresis loops, Preisach analysis shows that a different distribution of interactions or coercivities ought to be used in order to explain experimental results. Inspecting the behavior of hysteresis loops and FMR linewidth versus field angle, we infer that angular dependence might be exploited in angle sensing devices that could compete with Anisotropic (AMR) or Giant Magnetoresistive (GMR) based devices.