Understanding fine magnetic particle systems through use of first‐order reversal curve diagrams

AP Roberts, D Heslop, X Zhao… - Reviews of …, 2014 - Wiley Online Library
Magnetic hysteresis is a fundamentally important phenomenon that is useful for characterizing
magnetic particle … In addition to hysteresis loops, remanence curves, such as isothermal …

First order reversal curve diagrams and thermal relaxation effects in magnetic particles

CR Pike, AP Roberts, KL Verosub - Geophysical Journal …, 2001 - academic.oup.com
… a 2 D distribution function (FORC diagrams). FORC diagrams are useful for obtaining
information about switching fields and interactions in magnetic particle systems. Here, we examine …

Unlocking information about fine magnetic particle assemblages from first-order reversal curve diagrams: Recent advances

AP Roberts, D Heslop, X Zhao, H Oda, R Egli… - Earth-Science …, 2022 - Elsevier
… In contrast to the usually well-constrained sizes and shapes of magnetic particles produced
magnetic particle systems studied in geophysics tend to be complex and include magnetic

First‐order reversal curve diagrams: A new tool for characterizing the magnetic properties of natural samples

AP Roberts, CR Pike… - Journal of Geophysical …, 2000 - Wiley Online Library
… manifestations on a FORC diagram. Our results indicate that FORC diagrams can be used
to … provide more detailed information about the magnetic particles in a sample than standard …

First‐order reversal curve (FORC) diagrams of natural and cultured biogenic magnetic particles

AP Chen, R Egli, BM Moskowitz - Journal of Geophysical …, 2007 - Wiley Online Library
… the particles. We find that the clustering of otherwise similar particles has a strong influence
on FORC diagrams… of packing densities form the FORC diagrams, which were consistent with …

Detection of noninteracting single domain particles using first‐order reversal curve diagrams

R Egli, AP Chen, M Winklhofer… - Geochemistry …, 2010 - Wiley Online Library
… Ultrafine magnetic particles with grain size distributions typically covering the superparamagnetic
(SP) and SD range also form authigenically in sediments and soils where they can be …

Characterizing interactions in fine magnetic particle systems using first order reversal curves

CR Pike, AP Roberts, KL Verosub - Journal of Applied Physics, 1999 - pubs.aip.org
… The structure present in this set of curves is not readily apparent, but it can be emphasized
diagram. There are obvious similarities between a FORC diagram and a Preisach diagram,…

An investigation of magnetic reversal in submicron-scale Co dots using first order reversal curve diagrams

C Pike, A Fernandez - Journal of applied physics, 1999 - pubs.aip.org
… We will initially neglect all reversible changes in magnetization, and model the magnetic
hysteresis of a particle as the sum of two square loops, as diagrammed in Fig. 13a. In this …

FORCulator: A micromagnetic tool for simulating first‐order reversal curve diagrams

RJ Harrison, I Lascu - Geochemistry, Geophysics, Geosystems, 2014 - Wiley Online Library
… first-order reversal curve (FORC) diagrams of interacting single-domain particles. Magnetostatic
… Our motivation is to facilitate the routine simulation of FORC diagrams in rock magnetic

First-order reversal curve (FORC) diagrams of magnetic mixtures: Micromagnetic models and measurements

C Carvallo, AR Muxworthy, DJ Dunlop - Physics of the Earth and Planetary …, 2006 - Elsevier
diagrams to analyse magnetic mixtures, we must investigate the effects of mixtures on FORC
diagrams. … is visible on a FORC diagram if the spacing between particles is less than about …