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
Paleomagnetic and environmental magnetic studies are commonly conducted on samples
containing mixtures of magnetic minerals and/or grain sizes. Major hysteresis loops are …

[PDF][PDF] First-order reversal curve (FORC) diagrams

AR Muxworthy, AP Roberts - Encyclopedia of geomagnetism and …, 2007 - core.ac.uk
In many geomagnetic, geological and environmental magnetic studies, it is important to
have reliable methods of characterizing the composition and grain size distribution of …

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
First‐order reversal curve (FORC) diagrams are constructed from a class of partial magnetic
hysteresis loops known as first‐order reversal curves and are used to understand …

Magnetic characterization of geologic materials with first-order reversal curves

R Egli - Magnetic measurement techniques for materials …, 2021 - Springer
Since their introduction in Earth sciences in 1990, first-order reversal curve (FORC)
measurements have become an important tool for characterizing geologic materials. The …

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

CR Pike, AP Roberts, KL Verosub - Geophysical Journal …, 2001 - academic.oup.com
We have recently developed a technique for characterizing the magnetic components within
natural particle assemblages. This technique is based on the transformation of …

Influence of magnetostatic interactions on first-order-reversal-curve (FORC) diagrams: A micromagnetic approach

A Muxworthy, D Heslop… - Geophysical Journal …, 2004 - academic.oup.com
From experiments it is known that magnetostatic interactions between grains strongly affect
the magnetic hysteresis behaviour of samples, however, because of the difficulty in …

Assessing the ability of first‐order reversal curve (FORC) diagrams to unravel complex magnetic signals

AR Muxworthy, JG King… - Journal of Geophysical …, 2005 - Wiley Online Library
First‐order reversal curve (FORC) diagrams for mixtures of different magnetic phases and
bimodal distributions have been measured to examine the efficiency of the FORC method at …

A high‐precision model of first‐order reversal curve (FORC) functions for single‐domain ferromagnets with uniaxial anisotropy

AJ Newell - Geochemistry, Geophysics, Geosystems, 2005 - Wiley Online Library
Plots of the first‐order reversal curve (FORC) function are used to characterize ferromagnetic
particles in rocks. The function is based on classical Preisach theory, which represents …

First-order reversal curve (FORC) diagrams for pseudo-single-domain magnetites at high temperature

AR Muxworthy, DJ Dunlop - Earth and Planetary Science Letters, 2002 - Elsevier
The recently developed first-order reversal curve (FORC) technique for rapidly examining
magnetic domain state has great potential for paleomagnetic and environmental magnetic …

A protocol for variable‐resolution first‐order reversal curve measurements

X Zhao, D Heslop, AP Roberts - Geochemistry, Geophysics …, 2015 - Wiley Online Library
High‐resolution first‐order reversal curve (FORC) diagrams are being increasingly used in
rock and environmental magnetism, including for detection of biomagnetic signals in …