FORC-Diagram Analysis for a Step-like Magnetization Reversal in Nanopatterned Stripe Array

Belyaev, Victor; Murzin, Dmitry; Martínez-García, J.C.; Rivas, M.; Andreev, Nikolay; Козлов, А. Г.; Ognev, A. V.; Samardak, Alexander S.; Rodionova, Valeria

doi:10.3390/ma14247523

Cited by 5 publications

(2 citation statements)

References 26 publications

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“…The origin of the step-like hysteresis loop behavior was studied with local and integral magnetometry methods, including FORC diagram analysis, accompanied by magnetic microstructure dynamics measurements. The results are validated with macroscopic magnetic properties and micromagnetic simulations using the intrinsic switching field distribution [153]. FORC diagrams were used to study the hysteresis mechanisms in multi-domain particles [154].…”

Section: First-order Reversal Curve (Forc) Diagramsmentioning

confidence: 88%

Coercive Properties of Magnetic Garnet Films

Vértesy

2023

Crystals

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Magnetic garnet films represent a wide family of materials. By the proper choice of chemical composition and growth parameters, their magnetic behavior can be tuned in a very wide range. On one side, they are suitable for many different applications; on the other side, they are optimal model materials for studying the basic magnetization processes. Many assumptions of the existing theories can be checked or validated by magnetic garnet film investigation. Their production technology was developed many decades ago, but even nowadays, magnetic garnet films have been intensively studied, and newer and newer application possibilities have been found. In this review paper, those results are summarized, which are connected with their coercive properties. Coercivity, or coercive force, is a frequently used magnetic characteristic, but usually, it is considered rather a technical parameter. It is shown that there is no correlation between the so-called “technical coercive force” (which is the half-width of a major hysteresis loop) and the domain wall coercivity (this is frequently called a domain wall pinning field). This latter parameter is considered a real characteristic of domain wall movement. If magnetic garnet films are investigated, the correlation between moving domain wall and material defect structure can be studied. In this paper, the very complex feature of coercivity is shown. It is demonstrated that the domain structure, the properties of domain walls, the existence of mechanical stresses, the temperature, the size of the sample and many other parameters have an influence on the measured coercivity.

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Section: First-order Reversal Curve (Forc) Diagramsmentioning

confidence: 88%

Coercive Properties of Magnetic Garnet Films

Vértesy

2023

Crystals

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“…To characterize the technical magnetic intrinsic properties of a system, the major hysteresis loop (MHL) is commonly measured. In addition, an alternative method based on the measurement and analysis of multiple minor hysteresis curves, called first-order reversal curves (FORC), has been recently intensively used to study information about magnetic phases, interactions, and the processes taking place during the magnetization reversal of ferromagnetic systems and other reversible and quasi-reversible systems [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

First-Order Reversal Curves of Sets of Bistable Magnetostrictive Microwires

et al. 2023

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Amorphous microwires have attracted substantial attention in the past decade because of their useful technological applications. Their bistable magnetic response is determined by positive or negative magnetostriction, respectively. First-order reversal curves (FORC) are a powerful tool for analyzing the magnetization reversal processes of many-body ferromagnetic systems that are essential for a deeper understanding of those applications. After theoretical considerations about magnetostatic interactions among microwires, this work introduces a systematic experimental study and analysis of the FORC diagrams for magnetostrictive microwires exhibiting an individually bistable hysteresis loop, from a single microwire to sets of an increasing number of coupled microwires, the latter considered as an intermediate case to the standard many-body problem. We performed the study for sets of quasi-identical and different hysteretic microwires where we obtained the coercivity Hc and interaction Hu fields. In the cases with relevant magnetostatic interactions, FORC analysis supplies deeper information than standard hysteresis loops since the intrinsic fluctuations of the switching field generate a complex response. For sets of microwires with very different coercivity, the coercivity distributions of the individual microwires characterize the FORC diagram.

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