Determination of magnetic anisotropies and miscut angles in epitaxial thin films on vicinal (111) substrate by the ferromagnetic resonance

Belyaev, B. A.; Izotov, A. V.; Solovev, P.N.; Yakovlev, I. A.

doi:10.1016/j.jmmm.2016.12.081

Cited by 8 publications

(3 citation statements)

References 14 publications

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“…The resonance field (field at a point where the differential FMR curve changes sign) was determined with an accuracy of 0.05 Oe, and the peak-to-peak linewidth was determined with an accuracy of 0.1 Oe. The uniaxial in-plane magnetic anisotropy of the films was retrieved from the experimental angular dependences of the resonance field by fitting the parameters of a theoretical model of a single-domain film to the experimental data [27,28]. A few samples were also investigated by MOKE microscopy (NanoMOKE2, Durham Magneto Optics Ltd).…”

Section: Methodsmentioning

confidence: 99%

Experimental study of the magnetic characteristics of nanocrystalline thin films: the role of edge effects

Belyaev¹,

Izotov²,

Skomorokhov³

et al. 2019

Mater. Res. Express

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Section: Methodsmentioning

confidence: 99%

Experimental study of the magnetic characteristics of nanocrystalline thin films: the role of edge effects

Belyaev¹,

Izotov²,

Skomorokhov³

et al. 2019

Mater. Res. Express

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“…The spectrometer allows for measurements of the resonance field angular dependencies at a fixed pumping frequency from local areas (about 0.8 mm 2 ) of the film surface with very high accuracy. From these data, using a special fitting procedure [31], we extracted effective saturation magnetization and uniaxial anisotropy parameters. To study the properties of the sample in a wide frequency range, we used a shorted microstrip line technique [32].…”

Section: Sample Characterizationmentioning

confidence: 99%

Second harmonic generation in thin permalloy film

Solovev¹,

Afonin²,

Belyaev³

et al. 2021

J. Phys. D: Appl. Phys.

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Second harmonic generation versus strength and direction of the applied static magnetic field was measured for a thin permalloy (Ni80Fe20) film in a microstrip line at a driving frequency of 1 GHz and maximum input power of ∼110 mW. The measurements revealed two peaks in the double frequency signal—in the low static field (∼10 Oe) and the high one (∼45 Oe). To explain these findings, a macrospin model of a thin magnetic film with in-plane uniaxial magnetic anisotropy was considered. A perturbation expansion of the Landau–Lifshitz–Gilbert equation provided an explanation of the experimental data. The analysis of the model revealed that the low-field peak was caused by the longitudinal second-order magnetization component and the high-field peak by the transversal one. It was also shown that the uniaxial magnetic anisotropy of the film and the dependence of the magnetic damping parameter on the applied field play an important role in the process of the second harmonic generation. The results obtained give insights into some peculiarities of the nonlinear magnetization dynamics that are important in the development of magnetic film-based devices in the field of microwave signal processing and manipulation.

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“…[29] Magnetization saturation Ms and parameters of the in-plane uniaxial (field H2 and easy axis (EA) magnetization direction φ2) and unidirectional (field H1 and direction φ1) magnetic anisotropy were determined from the obtained angular dependences of the resonance field by fitting parameters of a theoretical model of a single-domain film to the experimental data. [30,31] The coordinate system and the anisotropies orientations are shown in Figure 1.…”

mentioning

confidence: 99%

Strain‐Gradient‐Induced Unidirectional Magnetic Anisotropy in Nanocrystalline Thin Permalloy Films

Belyaev

Izotov

Solovev

et al. 2019

Physica Rapid Research Ltrs

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We investigate the effect of inhomogeneous elastic deformation on the magnetic anisotropy of Ni71.5Fe28.5 wt.% nanocrystalline film. The in-plane controlled strains are induced in the film by bending of a glass substrate which has a thickness step in the middle. Ferromagnetic resonance measurements reveal the existence of the in-plane unidirectional magnetic anisotropy. The anisotropy behavior directly correlates with the calculated strain gradients. We show that this correlation is well explained by the flexomagnetic effect, which establishes the relation between the magnetization and the inhomogeneous strains. The experimental value of the flexomagnetic coefficient for the thin Ni71.5Fe28.5 wt.% film is 1.5×10 -3 T•m.The flexoeffects are electromagnetomechanical effects in which the electric polarization or magnetization exhibits a linear response to inhomogeneous mechanical impact (elastic strain or stress gradient). Among these effects, the most studied one is flexoelectricity. The coupling between electric polarization and strain gradient in crystals was theoretically investigated as early as the 1960s by

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Determination of magnetic anisotropies and miscut angles in epitaxial thin films on vicinal (111) substrate by the ferromagnetic resonance

Cited by 8 publications

References 14 publications

Experimental study of the magnetic characteristics of nanocrystalline thin films: the role of edge effects

Experimental study of the magnetic characteristics of nanocrystalline thin films: the role of edge effects

Second harmonic generation in thin permalloy film

Strain‐Gradient‐Induced Unidirectional Magnetic Anisotropy in Nanocrystalline Thin Permalloy Films

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