The effect of local magnetic field gradient on coercive field of domain walls

Půst, L.; Bertotti, G.

doi:10.1109/20.312423

Cited by 12 publications

(2 citation statements)

References 3 publications

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“…Correlation between the coercive properties of a soft magnetic material and the geometry of its domain structure was studied [92][93][94]. The coercive properties of soft magnetic material and the ways of influencing them through engineering of the domain structure geometry are discussed.…”

Section: Magnetostatic Designing Of Coercivitymentioning

confidence: 99%

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: Magnetostatic Designing Of Coercivitymentioning

confidence: 99%

Coercive Properties of Magnetic Garnet Films

Vértesy

2023

Crystals

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“…5 Domain wall applications in magnetoelectric devices are an intensively researched area, 6,7 and there are many studies of nanomagnet interaction and domain wall dynamics. [8][9][10][11] It has been recently demonstrated that a stray field of a domain wall can switch isolated magnets. 12 Since the nucleation of the domain wall requires less external field than switching the single-domain nanomagnet directly with the external field, domain-wall assisted clocking of NML devices can result in significant net power savings in an NML circuit.…”

Section: Introductionmentioning

confidence: 99%

Domain wall assisted ordering of coupled nanomagnets

Varga

Csaba

Bernstein

et al. 2014

Journal of Applied Physics

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Thermal stability of the geometrically constrained magnetic wall and its effect on a domain-wall spin valve This paper experimentally demonstrates that the stray field of a propagating domain wall can switch coupled nanomagnets to an antiferromagnetically ordered ground state. In our experiment, two nanomagnets placed side-by-side together with an input magnet form a coupled pair, or short wire segment. This structure is placed in close vicinity to a magnetic wire, which carries the domain wall. The local field of the wall is shown to influence the magnetic state of the magnets. This can be exploited for energy-efficient clocking of Nanomagnet Logic devices since the nucleation of the domain wall requires less external field than switching the single-domain nanomagnet directly with the external field. V C 2014 AIP Publishing LLC. [http://dx.

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