Spin valve with a composite dysprosium-based pinned layer as a tool for determining Dy nanolayer helimagnetism

Наумова, Л. И.; Milyaev, M. A.; Zavornitsyn, R. S.; Криницина, Т. П.; Proglyado, V. V.; Ustinov, V. V.

doi:10.1016/j.cap.2019.08.012

Cited by 19 publications

(5 citation statements)

References 24 publications

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“…This behavior of the Cu/Dy 2 O 3 thin film can be due to the effect of Cu diamagnetic nature, which drives Dy to behave diamagnetically and pronounces a small magnetization value. The difference above may be linked with the different local symmetry and the bond distances result in different ligand fields [38]. The behavior of Cu/Dy 2 O 3 thin film has also the support of XRD data as presented above, with Cu atoms present at the interstitial sites, not affecting the structure, rather other physical properties of the thin film.…”

Section: (C))supporting

confidence: 70%

Optical and Magnetic Response of Pure and CU-Ions Substituted Dysprosium Oxide Thin Films for Various Applications

Qureshi

2023

East Eur. J. Phys.

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Dysprosium oxide (Dy2O3) and Cu/Dy2O3 thin films of thickness 117.14 nm and 258.30 nm, respectively were successfully deposited via a well-known DC-magnetron sputtering technique. Field emission scanning electron microscopy clarifies the growth of uniform and fine granular particles on silicon substrate. The hexagonal closed pack structure for both the thin films has been observed by the x-ray diffraction analysis and it was observed that by inclusion of copper the HCP structure of thin film was retain with a slight shift in the main peak. The reduction from 3.9 eV to 3.8 eV in the energy band gap value was observed by incorporation of copper ions Dy2O3 thin films. The M-H loops obtained through Vibrating Sample Magnetometer (VSM) shows that Dy2O3 thin film behave ferromagnetically at low temperature with a saturation magnetization value of 2860 emu/cc and evolves through its phase transition temperatures and behave paramagnetically at room temperature. In Cu/Dy2O3 case, the diamagnetic response of Cu dominates and produces reverse hysteresis loop at both temperatures make it a suitable candidate for energy and memory storage devices applications.

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Section: (C))supporting

confidence: 70%

Optical and Magnetic Response of Pure and CU-Ions Substituted Dysprosium Oxide Thin Films for Various Applications

Qureshi

2023

East Eur. J. Phys.

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“…Interlayer exchange interaction between ferromagnetic layers, divided with (dia-, para)magnetic layer, is a key factor of many properties and physical effects, observed in artificial structures [ferro/(dia-,para)] N for the third decade already [1][2][3]. Value and sign of exchange interaction depend on thickness of " non-magnetic" layer.…”

Section: Introductionmentioning

confidence: 99%

Spin-wave resonance of exchange-coupled three-layers FeNi/Cu/FeNi planar structures

I.G.

S.V.

V.Y.

et al. 2022

Physics of the Solid State

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The spectrums of standing exchange spin waves into magnetic sandwich Ni80Fe20/Cu(tCu)/Ni80Fe20 were studied by spin-wave resonance method. The layer of diamagnetic Cu depending on its thickness tCu provided both positive and negative exchange interaction between ferromagnetic layers. It was shown that spin waves modes of SWR spectra which are described by well-known relation Hacres(n)~ n2 are standing acoustic exchange spin oscillations of individual ferromagnetic layers, regardless of a sign of interlayer exchange couple. It was detected that spin modes which are optical satellites of acoustic SWR peaks are described by the dependence of the resonance field Hopres(n)~ n5/2 or Hopres(n)~ n2 depending on the boundary conditions established on inner interfaces. Keywords: spin-wave resonance, surface anisotropy constant, exchange interaction constant, interlayer exchange interaction.

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“…Межслойное обменное взаимодействие между ферромагнитными слоями, разделенными (диа-, пара) магнитным слоем, является ключевым фактором многих свойств и физических эффектов наблюдаемых в искусственных структурах [ферро/(диа-,пара)] N вот уже третье десятилетие [1][2][3]. Величина и знак обменного взаимодействия зависит от толщины " немагнитной" прослойки.…”

Section: Introductionunclassified

Спин-волновой резонанс в обменно-связанных трехслойных FeNi/Cu/FeNi планарных структурах

Важенина¹,

Столяр²,

Яковчук³

et al. 2021

Физика Твердого Тела

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The spectrums of standing exchange spin waves into magnetic sandwich Ni80Fe20/Cu(tCu)/Ni80Fe20 were studied by spin-wave resonance method. The layer of diamagnetic Cu depending on its thickness tCu provided both positive and negative exchange interaction between ferromagnetic layers. It was shown that spin waves modes of SWR spectra which are described by well-known relation Hres(n)~n^2 are standing acoustic exchange spin oscillations of individual ferromagnetic layers, regardless of a sign of interlayer exchange couple. It was detected that spin modes which are optical satellites of acoustic SWR peaks are described by the dependence of the resonance field Hres(n)~n^(5/2) or Hres(n)~n^2 depending on the boundary conditions established on inner interfaces.

show abstract

Spin valve with a composite dysprosium-based pinned layer as a tool for determining Dy nanolayer helimagnetism

Cited by 19 publications

References 24 publications

Optical and Magnetic Response of Pure and CU-Ions Substituted Dysprosium Oxide Thin Films for Various Applications

Optical and Magnetic Response of Pure and CU-Ions Substituted Dysprosium Oxide Thin Films for Various Applications

Spin-wave resonance of exchange-coupled three-layers FeNi/Cu/FeNi planar structures

Спин-волновой резонанс в обменно-связанных трехслойных FeNi/Cu/FeNi планарных структурах

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