Comparison of hysteresis loop area scaling behavior of Co/Pt multilayers: Discrete and continuous field sweeping

Handoko, Djati; Lee, Sang Hyuk; Lee, Kyung Min; Jeong, Jong‐Ryul; Kim, Dong Hyun

doi:10.1016/j.jmmm.2013.09.053

Cited by 9 publications

(6 citation statements)

References 26 publications

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“…The scaling parameter  is found to depend on reversing field H rev . The existence of the scaling behavior during the magnetization reversal has been an important topic so far, for instance, as in the case of the hysteresis scaling behavior, known as the Steinmetz law [14]. However, the scaling relation between k and t exp found in the present study requires further theoretical investigation, which is beyond the scope of the present paper.…”

Section: Resultsmentioning

confidence: 70%

Analysis of Magnetic Relaxation With Pre-Existing Nucleation Sites Based on the Fatuzzo–Labrune Model

et al. 2015

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Time-resolved magnetic domain patterns of (Co/Pt) and (CoFeB/Pd) multilayers with perpendicular magnetic anisotropy are observed by means of magneto-optical microscopy, from which magnetic relaxation curves are determined via a quantitative image analysis. Interestingly, it has been observed that the relaxation processes starting with pre-existing nucleation sites, as well as starting from a fully saturated state, are well explained based on the Fatuzzo-Labrune model, although the pre-existing nucleation sites significantly modify the magnetization reversal behaviors.

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Section: Resultsmentioning

confidence: 70%

Analysis of Magnetic Relaxation With Pre-Existing Nucleation Sites Based on the Fatuzzo–Labrune Model

et al. 2015

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“…The values of quality criteria δ Av , Δ E and R 2 , calculated for the considered structures of the relationship (8), are compared in Table 1. Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…The scaling behavior of coercivity in thin magnetic films and multilayers has been investigated e.g. in papers [7][8][9], however scaling exponents and factors were obtained from individual fitting to experimental data for different excitation parameters. Thereby, the scaling exponents and factors did not have universal values.…”

Section: Introductionmentioning

confidence: 99%

The modified procedures in coercivity scaling

Najgebauer¹,

Sokalski²,

Szczygłowski³

2015

Archives of Electrical Engineering

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Abstract:The paper presents a scaling approach to the analysis of coercivity. The Widom-based procedure of coercivity scaling has been tested for non-oriented electrical steel. Due to insufficient results, the scaling procedure was improved relating to the method proposed by Van den Bossche. The modified procedure of coercivity scaling gave better results, in comparison to the original approach. The influence of particular parameters and a range of measurement data used in the estimations on the final effect of the coercivity scaling were discussed.

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“…( 1) is fulfilled. Such relation is typically satisfied by various ferromagnetic samples [24][25][26] . A log-log plot of the quantities entering Eq.…”

Section: Experiment: Minor Loops Behaviourmentioning

confidence: 99%

The Ferromagnetic Glass State: collapse of the standard ferromagnetic domain structure

Benini,

Shumilin,

Rakshit

et al. 2024

Preprint

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We demonstrate that, upon the chemisorption of organic molecules, Co thin films display a novel magnetic phase that we tentatively call Ferromagnetic Glass State. This is characterised by a giant magnetic hardening and by the violation of the Rayleigh law for magnetization reversal. Such new phase originates from the modification of the surface magnetic anisotropy induced by the molecule/film interaction, whose result is to produce a correlated random anisotropy field. The ferromagnetic glass state then emerges when the correlation length of the random anisotropy field is close to the characteristic exchange length that, in our case, is of the order of 10nm. At the microscopic level, the ferromagnetic glass state is defined by blurred pseudo-domains intertwined by diffuse and irregular domain walls. Intriguingly, the magnetization reversal process of such configuration terminates with vortex-like structures, predicted by theory and measured by magnetic-force microscopy. Our work shows how the strong electronic interaction of standard components, Co thin films and readily available molecules, can generate structures with remarkable new magnetic properties, and thus opens a new avenue for the design of tailored-on-demand magnetic composites.

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Comparison of hysteresis loop area scaling behavior of Co/Pt multilayers: Discrete and continuous field sweeping

Cited by 9 publications

References 26 publications

Analysis of Magnetic Relaxation With Pre-Existing Nucleation Sites Based on the Fatuzzo–Labrune Model

Analysis of Magnetic Relaxation With Pre-Existing Nucleation Sites Based on the Fatuzzo–Labrune Model

The modified procedures in coercivity scaling

The Ferromagnetic Glass State: collapse of the standard ferromagnetic domain structure

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