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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

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

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 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

The magnetometric technique of First Order Reversal Curve (FORC) analysis, applicable to hysteretic systems, is introduced to the study of superconducting samples. Some typical superconducting structures in FORC diagram are identified, and…

Superconductivity · Physics 2023-05-30 E. R. Di Lascio

To develop a full understanding of interactions in nanomagnet arrays is a persistent challenge, critically impacting their technological acceptance. This paper reports the experimental, numerical and analytical investigation of interactions…

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…

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

The paper describes some characteristics of the "P" curves for structural characterization of magnetic nano-particles suspensions (complex fluids, complex powders, complex composite materials, or living biological materials having magnetic…

Materials Science · Physics 2007-08-13 N. -C. Popa , A. Siblini , J. -J. Rousseau , M. -F. Blanc-Mignon , J. -P. Chatelon

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 investigate the calculation of the magnetic form factors of nano-objects with complex geometrical shapes and non homogeneous magnetization distributions. We describe a numerical procedure which allows to calculate the 3D magnetic form…

In this paper, we present a new method for the magnetic characterization of bulk materials, microstructures, and nanostructures. We investigated the magnetic and morphological properties of two colloidal dispersions of iron oxide (Fe3O4)…

We study the magnetic interactions experimentally in nanostructures of nanowire arrays. The intensity value obtained from the interactions provides information about its magnetic behavior. We observed two types of experimental magnetic…

A detailed numerical analysis of the magnetization reversal processes in multisegmented nanowire arrays was developed. The nanowires have a long aspect ratio and are formed by magnetic and non-magnetic sections alternately arranged in such…

Mesoscale and Nanoscale Physics · Physics 2015-07-09 E. A. Rando , S. Allende

Iron oxide magnetic nanoparticles (NPs) are stimuli-responsive materials at the forefront of nanomedicine. Their realistic finite temperature simulations are a formidable challenge for first-principles methods. Here, we use density…

Materials Science · Physics 2019-11-01 Hongsheng Liu , Cristiana Di Valentin

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

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 demonstrate how micromagnetic simulations can be employed in order to characterize and analyze the magnetic microstructure of nanocomposites. For the example of nanocrystalline Nd$-$Fe$-$B, which is a potential material for future…

Materials Science · Physics 2018-04-04 Sergey Erokhin , Dmitry Berkov , Masaaki Ito , Akira Kato , Masao Yano , Andreas Michels

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
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