Magnetization reversal via a Stoner–Wohlfarth model with bi-dimensional angular distribution of easy axis

Kuncser, Andrei; Kuncser, V.

doi:10.1016/j.jmmm.2015.07.035

Cited by 17 publications

(4 citation statements)

References 35 publications

(44 reference statements)

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“…In a magnetic monodomain with uniaxial anisotropy, the magnetization reversal canb be described using the Stoner–Wohlfarth model [29–30]. Thus, if the field is applied along the easy axis (EA), the magnetization changes steeply its orientation along the EA at a switching field proportional to the anisotropy constant and inversely proportional to the spontaneous magnetization.…”

Section: Resultsmentioning

confidence: 99%

Magnetism and magnetoresistance of single Ni–Cu alloy nanowires

Costas¹,

Florica²,

Matei³

et al. 2018

Beilstein J. Nanotechnol.

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Arrays of magnetic Ni–Cu alloy nanowires with different compositions were prepared by a template-replication technique using electrochemical deposition into polycarbonate nanoporous membranes. Photolithography was employed for obtaining interdigitated metallic electrode systems of Ti/Au onto SiO2/Si substrates and subsequent electron beam lithography was used for contacting single nanowires in order to investigate their galvano-magnetic properties. The results of the magnetoresistance measurements made on single Ni–Cu alloy nanowires of different compositions have been reported and discussed in detail. A direct methodology for transforming the magnetoresistance data into the corresponding magnetic hysteresis loops was proposed, opening new possibilities for an easy magnetic investigation of single magnetic nanowires in the peculiar cases of Stoner–Wohlfarth-like magnetization reversal mechanisms. The magnetic parameters of single Ni–Cu nanowires of different Ni content have been estimated and discussed by the interpretation of the as derived magnetic hysteresis loops via micromagnetic modeling. It has been theoretically proven that the proposed methodology can be applied over a large range of nanowire diameters if the measurement geometry is suitably chosen.

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Section: Resultsmentioning

confidence: 99%

Magnetism and magnetoresistance of single Ni–Cu alloy nanowires

Costas¹,

Florica²,

Matei³

et al. 2018

Beilstein J. Nanotechnol.

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“…Besides, the aforementioned off-axis EH experimental result and micromagnetic simulations reveal that the shape anisotropy plays a decisive role in the distribution of magnetic moments in the CoCu/Cu MNW, which also means that the MR of individual MNWs is dominated by anisotropic magnetoresistance (AMR). The value of AMR is first calculated using the Stoner–Wohlfarth model, , as shown in the Supporting Information S8. A 0.04% AMR value is obtained, which is much smaller than that of the experimental value.…”

Section: Resultsmentioning

confidence: 99%

Magnetotransport Mechanism of Individual Nanostructures via Direct Magnetoresistance Measurement in situ SEM

Zhang

Peng

Hai

et al. 2020

ACS Appl. Mater. Interfaces

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The accurate magnetoresistance measurement of individual nanostructures is essential and significant for not only enriching the fundamental knowledge of magneto-transport mechanism but also facilitating the designs of desired magnetic nanostructures for diverse technological applications. Herein, we report a deep investigation on the magneto-transport mechanism of single CoCu/Cu multilayered nanowire via direct magnetoresistance measurement by using our invented magnetotransport instrument in-situ scanning electron microscopy (SEM). Off-axis electron holography experiments combined with micromagnetic simulation prove that the CoCu layers in CoCu/Cu multilayered nanowires are formed a multi-domain structure, in which the alignment of magnetic moments is mainly determined by shape anisotropy. The MR of the single CoCu/Cu multilayered nanowire is measured to be only 1.14% when the varied external field is applied along nanowire length axis, which matches with the theoretical prediction of Granular Films model. Density functional theory (DFT) calculations further disclose that spin-dependent scattering at the interface between magnetic and nonmagnetic layers is responsible for the intrinsic magneto-transport mechanism.

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“…Meanwhile, previous results based on the SW model cannot explain the angle dependence of the switching field around 90° [35,36]. To overcome these limitations, the distribution of magnetization was considered on saturation magnetization and hysteresis loop [37,38]. However, the aforementioned problem with high angle has not been fully solved yet because a polar angle is solely considered.…”

Section: Discussionmentioning

confidence: 99%

Statistical approach based on the Stoner-Wohlfarth model for the switching field in a misoriented magnet array

Lee,

Park,

Han

et al. 2024

Phys. Rev. Applied

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Magnetization reversal via a Stoner–Wohlfarth model with bi-dimensional angular distribution of easy axis

Cited by 17 publications

References 35 publications

Magnetism and magnetoresistance of single Ni–Cu alloy nanowires

Magnetism and magnetoresistance of single Ni–Cu alloy nanowires

Magnetotransport Mechanism of Individual Nanostructures via Direct Magnetoresistance Measurement in situ SEM

Statistical approach based on the Stoner-Wohlfarth model for the switching field in a misoriented magnet array

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