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The generic problem of extracting information on intrinsic particle properties from the whole class of interacting magnetic fine particle systems is a long standing and difficult inverse problem. As an example, the Switching Field…

Materials Science · Physics 2016-11-29 Sergiu Ruta , Ondrej Hovorka , Pin-Wei Huang , Kangkang Wang , Ganping Ju , Roy Chantrell

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…

Materials Science · Physics 2020-12-22 Dustin A. Gilbert , Peyton D. Murray , Julius De Rojas , Randy K. Dumas , Joseph E. Davies , Kai Liu

The first-order reversal curve (FORC) method for analysis of systems undergoing hysteresis is applied to dynamical models of electrochemical adsorption. In this setting, the method can not only differentiate between discontinuous and…

Materials Science · Physics 2007-05-23 I. Abou Hamad , D. T. Robb , P. A. Rikvold

The first order reversal curve (FORC) method is a macroscopic measurement technique which can be used to extract quantitative, microscopic properties of hysteretic systems. Using magnetic transmission X-ray microscopy (MTXM), local…

Materials Science · Physics 2024-06-12 Dustin A. Gilbert , Mi-Young Im , Kai Liu , Peter Fischer

First Order Reversal Curves (FORCs) have been used for a number of years for the extraction of information from magnetization measurements. The results are most unambiguous for irreversible processes -- for a collection of Preisach…

Materials Science · Physics 2016-10-31 P. B. Visscher

We apply the first-order reversal curve (FORC) method, borrowed from studies of ferromagnetic materials, to the magneto-structural phase transition of FeTe. FORC measurements reveal two features in the hysteretic phase transition, even in…

Strongly Correlated Electrons · Physics 2017-06-28 M. K. Frampton , J. Crocker , D. A. Gilbert , N. Curro , Kai Liu , J. A. Schneeloch , G. D. Gu , R. J. Zieve

First Order Reversal Curve (FORC) diagrams are a popular tool in geophysics and materials science for the characterization of magnetic particles of natural and synthetic origin. However, there is still a lot of controversy about the…

Hysteretic giant magnetoimpedance (GMI) of amorphous ribbons with a well-defined transversal domain structure is investigated by means of first-order reversal curves (FORC) analysis. The FORCs are not confined to the hysteretic area,…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 Fanny Béron , Lenina A. Valenzuela , Marcelo Knobel , Luiz G. C. Melo , K leber R. Pirota

Combined first order reversal curve (FORC) analyses of the magnetization (M-FORC) and magnetoresistance (MR-FORC) have been employed to provide a comprehensive study of the M-MR correlation in two canonical systems: a NiFe/Cu/FePt pseudo…

Materials Science · Physics 2014-09-12 Randy K. Dumas , Peter K. Greene , Dustin A. Gilbert , Li Ye , Chaolin Zha , Johan Åkerman , Kai Liu

Multiphase magnetic systems are common in nature and are increasingly being recognized in technical applications. One characterization method which has shown great promise for determining separate and collective effects of multiphase…

Materials Science · Physics 2018-02-14 Yue Cao , Mostafa Ahmadzadeh , Ke Xu , Brad Dodrill , John S. McCloy

A novel method to study the fundamental problem of quantum double well potential systems that display magnetic hysteresis is proposed. The method, coined quantum-first-order reversal curve (QFORC) analysis, is inspired by the conventional…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Fanny Béron , Miguel A. Novak , Maria G. F. Vaz , Guilherme P. Guedes , Marcelo Knobel , Amir Caldeira , Kleber R. Pirota

In conventional FORC (First Order Reversal Curve) analysis of a magnetic system, reversible and low-coercivity irreversible materials are treated as being qualitatively different: the FORC distribution shows low-coercivity materials but…

Materials Science · Physics 2018-11-07 P. B. Visscher

First-order reversal curves (FORC) measurements are broadly used for characterization of complex magnetic nanostructures, but a robust framework for quantitative analysis of the FORC data is still obscure despite numerous studies over…

Applied Physics · Physics 2019-12-02 Mohammad Reza Zamani Kouhpanji , Bethanie J H Stadler

We have studied magnetic tunnel junction (MTJ) thin-film stacks using the First Order Reversal Curve (FORC) method. These have very sharp structures in the FORC distribution, unlike most particulate systems or patterned films. These…

Materials Science · Physics 2018-08-15 Joseph B. Abugri , P. B. Visscher , Subhadra Gupta , P. J. Chen , R. D. Shull

In artificial spin ice (ASI), magnetic interactions between nanomagnets determine both the stable states and the switching pathways under an applied field. Here, first-order reversal curve (FORC) measurements are used to map how these…

Materials Science · Physics 2026-04-28 Brindaban Ojha , Matías P. Grassi , Vassilios Kapaklis

First-order reversal curves (FORC) diagram method is one of the most successful characterization techniques used to characterize complex hysteretic phenomena not only in magnetism, but also in other areas of science like in…

Materials Science · Physics 2019-02-20 Dorin Cimpoesu , Ioan Dumitru , Alexandru Stancu

We test the predictive power of first-oder reversal curve (FORC) diagrams using simulations of random magnets. In particular, we compute a histogram of the switching fields of the underlying microscopic switching units along the major…

Materials Science · Physics 2009-09-29 Helmut G. Katzgraber , Gary Friedman , G. T. Zimanyi

We propose a new experimental technique for cyclic voltammetry, based on the first-order reversal curve (FORC) method for analysis of systems undergoing hysteresis. The advantages of this electrochemical FORC (EC-FORC) technique are…

Materials Science · Physics 2007-08-07 I. Abou Hamad , D. T. Robb , P. A. Rikvold

We report a novel singularity in the hysteresis of spin glasses, the reversal-field memory effect, which creates a non-analyticity in the magnetization curves at a particular point related to the history of the sample. The origin of the…

Disordered Systems and Neural Networks · Physics 2007-05-23 H. G. Katzgraber , F. Pazmandi , C. R. Pike , Kai Liu , R. T. Scalettar , K. L. Verosub , G. T. Zimanyi

The magnetization behaviour of the soft Cobalt Ferrite-hard Strontium Ferrite nanocomposite is tuned from the non exchange spring nature to the exchange spring nature, by controlling the particle size of the soft Cobalt Ferrite in the…

Materials Science · Physics 2015-06-15 Debangsu Roy , Sreenivasulu K , P S Anil Kumar
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