2020/12/20 by Dustin A. Gilbert, Peyton D. Murray, Gilbert, Dustin A. +9
Engineering · Materials Science · Physics and Astronomy · #Characterization and Applications of Magnetic Nanoparticles #Data Analysis #FOS: Physical sciences #Magnetic Properties and Applications #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Statistics and Probability (physics.data-an)
paper · pdf · doi:10.48550/arxiv.2012.11041
openalex publication_date 2020/12/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The first order reversal curve (FORC) method is a magnetometry based\ntechnique used to capture nanoscale magnetic phase separation and interactions\nwith macroscopic measurements using minor hysteresis loop analysis. This makes\nthe FORC technique a powerful tool in the analysis of complex systems which\ncannot be effectively probed using localized techniques. However, recovering\nquantitative details about the identified phases which can be compared to\ntraditionally measured metrics remains an enigmatic challenge. We demonstrate a\ntechnique to reconstruct phase-resolved magnetic hysteresis loops by\nselectively integrating the measured FORC distribution. From these minor loops,\nthe traditional metrics - including the coercivity and saturation field, and\nthe remanent and saturation magnetization - can be determined. In order to\nperform this analysis, special consideration must be paid to the accurate\nquantitative management of the so-called reversible features. This technique is\ndemonstrated on three representative materials systems, high anisotropy FeCuPt\nthin-films, Fe nanodots, and SmCo/Fe exchange spring magnet films, and shows\nexcellent agreement with the direct measured major loop, as well as the phase\nseparated loops.\n