Evidence for strong surface magnetoelastic anisotropy in epitaxial Cu/Ni/Cu(001) sandwiches

Bochi, Gabriel; Ballentine, C. A.; Inglefield, H. E.; Thompson, Carl V.; O’Handley, R. C.

doi:10.1103/physrevb.53.r1729

Cited by 128 publications

(109 citation statements)

References 23 publications

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“…We see that the angle between the magnetic moment and the normal to sample increases with the number of the layer. This distribution is very similar to that demonstrated by thin films with different types of surface and volume anisotropy [26][27][28][29] .…”

Section: Discussionsupporting

confidence: 63%

Interlayer interaction in multilayer [Co/Pt]n/Pt/Co structures

Demidov¹,

Гусев

Budarin³

et al. 2016

Journal of Applied Physics

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We report a study of interlayer exchange interaction in multilayer CoPt/Co structures consisting of periodic CoPt multilayer film with an "easy axis" anisotropy and thick Co layer with an "easy plane" anisotropy separated by Pt spacer with variable thickness. The magnetooptical Kerr effect (MOKE) and ferromagnetic resonance (FMR) measurements show up the essentially non-collinear state of magnetic moments of the layers and strong exchange coupling between CoPt and Co subsystems. The estimation of effective anisotropy and exchange coupling in a simple model based on the LandauLifshitz-Gilbert equation describing magnetization dynamics was performed.

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Section: Discussionsupporting

confidence: 63%

Interlayer interaction in multilayer [Co/Pt]n/Pt/Co structures

Demidov¹,

Гусев

Budarin³

et al. 2016

Journal of Applied Physics

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“…1͑c͔͒, in agreement with other work. 8,9 The 4-, 9-, and 10-nm-thick films are more easily magnetized out-of-plane compared to in-plane ͑K p Ͼ 0͒ while for the 15 nm film the opposite behavior is observed ͑K p Ͻ 0͒. Figure 2 shows data for the patterned films.…”

Section: Resultsmentioning

confidence: 99%

“…Anisotropy is most commonly controlled via the geometrical shape of the structure, 6 or by magnetocrystalline anisotropy, 7 but in certain strained epitaxial magnetic films, magnetoelastic ͑ME͒ effects can dominate the anisotropy, [8][9][10] leading, for example, to a net anisotropy K p oriented perpendicular to the film plane. Patterning of a strained layer breaks the in-plane symmetry and produces an asymmetric strain relaxation and an in-plane ME anisotropy contribution to the total magnetic anisotropy energy.…”

Section: Introductionmentioning

confidence: 99%

Origin of transverse magnetization in epitaxial Cu/Ni/Cu nanowire arrays

et al. 2009

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The patterning-induced changes in the magnetic anisotropy and hysteresis of epitaxial ͑100͒-oriented Cu/ Ni͑9, 10, 15 nm͒/Cu planar nanowires have been quantified. When the Ni films are patterned into lines, strain relaxation leads to a thickness-dependent net in-plane anisotropy transverse to the lines. The magnetoelastic anisotropy was found from the three-dimensional strain state measured directly by synchrotron x-ray diffraction and has a value of −21 kJ/ m 3 for 10-nm-thick nanowires. The angular dependence of the remanence of the nanowires indicates that the in-plane easy direction is the result of the competition between the cubic magnetocrystalline anisotropy and a uniaxial anisotropy that includes shape and magnetoelastic effects. The patterning-induced changes in magnetoelastic anisotropy, combined with the shape and magnetocrystalline anisotropies, quantitatively explain the net anisotropy of the nanowires. Thus by controlling the film thickness and wire orientation, the easy axis direction of the nanowires may be controlled.

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“…The reentrant in-plane magnetization of Ni/Cu(001) in the ultrathin range [18,20], is now explained by non-linear magnetoelastic effects. The strain dependance of Ks itself was also postulated, initially on Ni/Cu(001) [21], however of puzzlingly high magnitude, and could never be confirmed unambiguously. From all this it must be concluded that magnetoelastic and true Néel-type anisotropy are entangled in thin films.…”

Section: Thin Films a Model For Surface Anisotropymentioning

confidence: 99%

Magnetism in reduced dimensions

Fruchart

Thiaville

2005

Comptes Rendus. Physique

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We propose a short overview of a few selected issues of magnetism in reduced dimensions, which are the most relevant to set the background for more specialized contributions to the present Special Issue. Magnetic anisotropy in reduced dimensions is discussed, on a theoretical basis, then with experimental reports and views from surface to single-atom anisotropy. Then conventional magnetization states are reviewed, including macrospins, single domains, multidomains, and domain walls in stripes. Dipolar coupling is examined for lateral interactions in arrays, and for interlayer interactions in films and dots. Finally thermally-assisted magnetization reversal and superparamagnetism are presented. For each topic we sought a balance between well established knowledge and recent developments.To cite this article: O. Fruchart, A. Thiaville, C. R. Physique X (y) (2005). RésuméNous proposons un panorama de quelques aspects du magnétisme en dimensions réduites, appropriés comme toile de fond pour les articles plus spécialisés de ce numéro spécial. L'anisotropie magnétique en dimensions réduites est discutée, sur le plan théorique, puis appuyée par des exemples, allant des surfaces aux atomes individuels. Les configurations d'aimantation les plus courantes sont ensuite décrites : macrospins, monodomaines, multidomaines, parois dans des bandes. Les couplages magnétiques, essentiellement dipolaires, sont décrit pour des réseaux et pour des bi-couches. Enfin nous présentons les effets de l'activation thermique, de la baisse de coercitivité jusqu'au superparamagnétisme. Pour chaque aspect nous avons recherché unéquilibre entre résultatsétablis et développements récents.Pour citer cet article : O. Fruchart, A. Thiaville, C. R. Physique X (y) (2005).

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Evidence for strong surface magnetoelastic anisotropy in epitaxial Cu/Ni/Cu(001) sandwiches

Cited by 128 publications

References 23 publications

Interlayer interaction in multilayer [Co/Pt]n/Pt/Co structures

Interlayer interaction in multilayer [Co/Pt]n/Pt/Co structures

Origin of transverse magnetization in epitaxial Cu/Ni/Cu nanowire arrays

Magnetism in reduced dimensions

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