Reconstructing phase-resolved hysteresis loops from first-order reversal curves

Abstract The first order reversal curve (FORC) method is a magnetometry based technique used to capture nanoscale magnetic phase separation and interactions with macroscopic measurements using minor hysteresis loop analysis. This makes the FORC powerful tool in analysis of complex systems which cannot be effectively probed localized techniques. However, recovering quantitative details about identified phases can compared traditionally measured metrics remains an enigmatic challenge. We demonstrate reconstruct phase-resolved loops by selectively integrating distribution. From these loops, traditional metrics—including coercivity saturation field, remanent magnetization—can determined. In perform this analysis, special consideration must paid accurate management so-called reversible features. demonstrated on three representative materials systems, high anisotropy FeCuPt thin-films, Fe nanodots, SmCo/Fe exchange spring magnet films, shows excellent agreement direct major loop, as well separated loops.