Ferromagnetic resonance spectra in a weak stripe domain structure

Vukadinovic, N.; Labrune, M.; Youssef, J. Ben; Marty, A.; Toussaint, Jean-Christophe; Gall, H. Le

doi:10.1103/physrevb.65.054403

Cited by 65 publications

(44 citation statements)

References 25 publications

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“…For larger D ( D > D lim ) while increasing Q above Q CR (or increasing thickness above the second critical thickness, d RPT2 ) magnetization distribution with out‐of‐plane magnetization components also appears, see Fig. G and H . However, the magnetization distribution is now more complicated (the evolution of the three‐dimensional magnetization vector distribution depending on its distance from the surface of the sample) than the distribution discussed above.…”

Section: Magnetization Distributions Near the Anisotropy‐ And Field‐imentioning

confidence: 80%

Magnetization states and magnetization processes in nanostructures: From a single layer to multilayers

Maziewski

Faßbender

Kisielewski

et al. 2014

Physica Status Solidi (a)

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The results of combined (experimental, analytical, and micromagnetic simulations) studies on the evolution of magnetization states and processes in ultrathin films and multilayered systems are presented. We show ways to manipulate magnetization distributions in ultrathin magnetic single or multilayers by tuning: the thickness of the magnetic layer, the thickness of either the non‐magnetic cap or spacer layer, the magnetic anisotropy, and the geometrical constrictions of the system. In ultrathin magnetic films, both the magnetization distribution and the critical thickness of the magnetization reorientation phase transition (RPT) between perpendicular and in‐plane states can be also controlled by post‐growth treatments, e.g., by either ion or light irradiation. By changing the geometrical parameters of the nanostructure, as well as by an applied external magnetic field, one can tune magnetic domain sizes in a giant range (of a few orders of magnitude) and induce the RPT. Transitions between two‐ and three‐dimensional magnetization distributions are discussed.

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Section: Magnetization Distributions Near the Anisotropy‐ And Field‐imentioning

confidence: 80%

Magnetization states and magnetization processes in nanostructures: From a single layer to multilayers

Maziewski

Faßbender

Kisielewski

et al. 2014

Physica Status Solidi (a)

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“…Considering an exchange constant of 0.6 × 10 −11 J/m, we obtain an exchange length of 9.6 nm. Then, from results due to Vukadinovic et al, 23 the quality factor's critical value is Q = 0.48, corresponding to a perpendicular anisotropy constant K perp ≈ 3 × 10 4 J/m 3 . This value is of the same order of magnitude as previously obtained by FMR for infinite films.…”

Section: Quantitative Analysismentioning

confidence: 88%

Magnetization textures in NiPd nanostructures

et al. 2011

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We have observed peculiar magnetization textures in Ni80Pd20 nanostructures using three different imaging techniques: magnetic force microscopy, photoemission electron microscopy under polarized X-ray absorption, and scanning electron microscopy with polarization analysis. The appearances of diamond-like domains with strong lateral charges and of weak stripe structures bring into evidence the presence of both a transverse and a perpendicular anisotropy in these nanostrips. This anisotropy is seen to reinforce as temperature decreases, as testified by a simplified domain structure at 150 K. A thermal stress relaxation model is proposed to account for these observations. Elastic calculations coupled to micromagnetic simulations support qualitatively this model.

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“…[1][2][3][4][5][6][7][8][9] The present work deals with the ferromagnetic resonance modes ͑position and intensity͒ of a magnetic tunnel junction-like system. Such a system may consist of a stacking of an antiferromagnetic layer ͑AF͒ and two ferromagnetic layers ͑A and B͒ separated by a nonmagnetic interlayer.…”

Section: Introductionmentioning

confidence: 99%

Study of the resonance modes of a magnetic tunnel junction-like system

Layadi

2005

Phys. Rev. B

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The ferromagnetic resonance ͑FMR͒ modes of a magnetic tunnel junction-like system are investigated. Such a system consists of an interfacial ͑F/AF͒ interaction described by an exchange anisotropy field H E and a magnetic coupling of two ferromagnetic layers separated by a nonmagnetic interlayer. The latter interaction is accounted for by bilinear J 1 and biquadratic J 2 coupling strengths. The dispersion relation, the resonant frequency, f, as well as the corresponding mode intensity, I, versus applied field H curves, have been studied. Analytical formulas for the resonance condition and intensity have been derived for the low magnetic coupling/ high exchange anisotropy case. In this situation, the system is found to behave as two uncoupled layers with magnetic characteristics different from those of the initial layers; the effect of the low coupling is to modify the different anisotropies: J 1 contributes to the exchange anisotropy while J 2 modifies the magnetocrystalline anisotropies. For very strong coupling, the system behaves as a single ͑F/AF͒ system with effective exchange and magnetocrystalline anisotropy fields; these fields have been derived as a function of the individual layer magnetic parameters.

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Ferromagnetic resonance spectra in a weak stripe domain structure

Cited by 65 publications

References 25 publications

Magnetization states and magnetization processes in nanostructures: From a single layer to multilayers

Magnetization states and magnetization processes in nanostructures: From a single layer to multilayers

Magnetization textures in NiPd nanostructures

Study of the resonance modes of a magnetic tunnel junction-like system

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