Vortex magnetic structure in circularly magnetized microwires as deduced from magneto-optical Kerr measurements

Ivanov, Yurii P.; Real, R. P. del; Chubykalo‐Fesenko, O.; Vázquez, M.

doi:10.1063/1.4863262

Cited by 11 publications

(5 citation statements)

References 28 publications

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“…Following the experimental foundations laid down in these articles, we, together with Yamasaki s laboratory, observed both the formation of magnetic vortexes and the transformation of surface domains under the action of mechanical stress [71,72]. An independent confirmation of the vortex structure was demonstrated in the work [73].…”

Section: Background: Magnetic Structure In Magnetic Microwiresmentioning

confidence: 76%

Review of Helical Magnetic Structures in Magnetic Microwires

et al. 2022

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We provide an overview of the helical magnetic structures in magnetic microwires. Having analyzed the experimental data describing the magnetic behavior of magnetic microwires since the 1990s, we found indirect evidence of the existence of various types of helical magnetic structures. Purposeful research has allowed us to discover the spiral magnetic structure as one of the most unusual helical structures. A comparison of the spiral structure with another type of helical structure—elliptical—was carried out. In the analysis, emphasis was placed on the length of the domain wall as one of the most important parameters. The difference in the dynamic properties of the spiral and elliptical domain walls has been demonstrated.

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Section: Background: Magnetic Structure In Magnetic Microwiresmentioning

confidence: 76%

Review of Helical Magnetic Structures in Magnetic Microwires

et al. 2022

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“…В случае микропроводов анизотропия формы может быть значительной и приводит к существованию критической длины микропровода, разделяющего многодоменное состояние при " малых" длинах и однодоменное состояние ядра с небольшим вкладом замыкающих доменов на концах " длинного" микропровода. Критическая длина L c для наблюдения магнито-бистабильного состояния связана с существованием " замыкающих" доменов на концах проводов и с проникновением замыкающих доменов размером L cd внутрь микропровода как Поле размагничивания отдельного микропровода можно оценить согласно формуле [1][2]:…”

Section: Discussionunclassified

“…Ферромагнитные микропроволоки являются квазиодномерными объектами, в которых специфика движения доменных стенок определяется конкуренцией поля размагничивания и внутрикристаллической анизотропией. Это позволяет обнаруживать новые физические явления, такие как распространение доменных стенок со сверхзвуковой скоростью [1], создание магнитохиральных доменов разного знака [2], переходы между детерминированными и стохастическими режимами перемагничивания в нелинейной системе микропроводов [3] и многие другие эффекты, важные для физики магнетизма. Кроме того, магнитные микропроволоки занимают значительную нишу в производстве миниатюрных датчиков различного типа.…”

Section: Introductionunclassified

Бистабильное и многодоменное состояния ферромагнитных микропроводов alpha-Fe/(PrDy)(FeCo)B

Коплак¹,

Sidorov²,

Kunitsyna³

et al. 2019

Физика Твердого Тела

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Microwire of α-Fe(50 at.%)(PrDy)(FeCo)B(48 at.%) was obtained by extracting a hanging melt drop of (PrDy)(FeCo)B in an electron beam. It was shown that a single microwire with a diameter of 50 μm and a length of 0.8 - 6 mm with an amorphous phase (PrDy)(FeCo)B content of ~ 48% and a polycrystalline α-Fe phase of ~ 52% has a rectangular narrow magnetic hysteresis loop and, accordingly, a bistable state with a switching field of ~ 100 Oe. The shortening of the wire to ~ 0.6 mm leads to a sharp deviation from the squareness of the loop, reducing the slope of the dependence of the magnetization on the field and the coercive force to 20 Oe. In the subsurface layers consisting of the amorphous phase (PrDy)(FeCo)B, oriented areas of reverse magnetization are observed. The role of the magnetic dipole interaction in the formation of a magnetic hysteresis loop of chaotic microwire assemblies of various compositions is discussed.

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“…Control of surface domains structure is the key question of the physics of the magnetic microwire [2]- [5]. Earlier, we have demonstrated the great influence of the different types of surface domain structure on the giant magnetoimpedance (GMI) effect [6].…”

Section: Introductionmentioning

confidence: 99%

Manipulation of Magnetic Domain Structures With Helical Magnetization in Magnetic Microwires

et al. 2014

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We report investigations on crossed magnetic field-induced transformation of surface domain structure in amorphous glass covered microwires. The study has been performed by a magneto-optical Kerr effect technique using optical microscopy. The existence of elliptic domain structure has been demonstrated experimentally. The formation of the domain structure with periodically inclined domain walls caused by the circular magnetic field was found in the surface of microwires.Index Terms-Amorphous magnetic wires, magnetic domains, magneto-optical Kerr effect (MOKE).

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Vortex magnetic structure in circularly magnetized microwires as deduced from magneto-optical Kerr measurements

Abstract: Magneto-optical investigation of high-frequency electric current influence on surface magnetization reversal in Co-rich amorphous microwires

Cited by 11 publications

References 28 publications

Review of Helical Magnetic Structures in Magnetic Microwires

Review of Helical Magnetic Structures in Magnetic Microwires

Бистабильное и многодоменное состояния ферромагнитных микропроводов alpha-Fe/(PrDy)(FeCo)B

Manipulation of Magnetic Domain Structures With Helical Magnetization in Magnetic Microwires

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