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Mougin, A.; Dufour, C.; Dumesnil, K.; Mangin, Ph.

doi:10.1103/physrevb.62.9517

Cited by 72 publications

(70 citation statements)

References 19 publications

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“…Such a curve has been also observed in DyFe 2 thin film. 18) In order to make the straight forward change of the relation between Á and K u , the values of Young's modulus is necessary. Therefore, the value of E for Stycast # 1266 and # 2850 KT were measured with a tensile test instrument and the obtained stress-strain curves are shown in Fig.…”

Section: Origin Of Perpendicular Magnetic Anisotropy In Tb-fe Amorphomentioning

confidence: 99%

Origin of Perpendicular Magnetic Anisotropy in Tb-Fe Amorphous Alloy

et al. 2003

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The origin of perpendicular magnetic anisotropy has been investigated in a thick Tb-Fe amorphous alloy plate prepared by dc high-rate sputtering. In the as-prepared samples with and without a Cu substrate, no distinct difference in perpendicular magnetic anisotropy was confirmed. After annealing, the perpendicular magnetic anisotropy in the sample with a Cu substrate was maintained, whereas that disappeared in the sample without a Cu substrate. Inducing thermal strains with an epoxy resin, the perpendicular magnetic anisotropy was restored. Therefore, it is concluded that the strong strains induced by the difference between the thermal expansion of the Tb-Fe amorphous alloy plate and the Cu substrate dominate to the origin of perpendicular magnetic anisotropy.

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Section: Origin Of Perpendicular Magnetic Anisotropy In Tb-fe Amorphomentioning

confidence: 99%

Origin of Perpendicular Magnetic Anisotropy in Tb-Fe Amorphous Alloy

et al. 2003

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“…This is what allows the system to develop exchange spring configurations, keeping the iron moments bounded to the dysprosium moments of the hard layers at the boundaries. The effects of strain on the magnetic anisotropy of MBE-grown DyFe YFe superlattices are negligible at temperatures below 100 K [6]. We study the system with a unidimensional model along the out-of-plane direction, neglecting spatial variations of the magnetization across the plane of the layers.…”

Section: Modelmentioning

confidence: 99%

Micromagnetic Modelling of the Dynamics of Exchange Springs in Multi-Layer Systems

et al. 2007

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Exchange springs are formed in multilayers of alternating hard and soft ferromagnetic materials which are exchange coupled at their interfaces. These systems are rich of interesting physical properties, which can be tuned by selecting suitable geometries and compositions. In this paper, we present a computational study of the dynamics of a tri-layer DyFe 2 YFe 2 DyFe 2 exchange spring system near the bending field (the field required to twist the magnetization of the soft YFe 2 layer out of the aligned state). The dynamical reaction of the system to small variations of the applied field is studied and its oscillatory nature is analyzed numerically. The behaviors of the decay times, the frequencies, and amplitudes reveal enhanced responses of the system near the bending field.Index Terms-Dysprosium alloys, exchange springs, finite-element method, magnetic layered films, magnetic multilayers, micromagnetism, Nmag, numerical analysis, yttrium alloys.

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“…Concomitantly, there has been renewed interest in the values of the magnetic anisotropy parameters, as input parameters for magnetic modelling of the epitaxial films (Mougin et al 2000, Bowden et al 2003. Long ago, estimates for the bulk REFe 2 compounds were given by Atzmony and Dariel (1976), who showed that in addition to the phenomenological K 1 and K 2 parameters for cubic symmetry, it is necessary to include a higher-order term K 3 .…”

Section: Introductionmentioning

confidence: 99%

“…Mougin et al (2000) have shown that MBE-grown films exhibit a strain term, frozen-in during crystal growth. This term, which has the same form as the magneto-elastic Hamiltonian, is usually written:…”

Section: Introductionmentioning

confidence: 99%

Magnetic anisotropy terms in [110] MBE-grown REFe₂films involving the strain term ε_xy

Bowden

Groot

Rainford

et al. 2006

J. Phys.: Condens. Matter

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The magnetic anisotropy parameters in [110] MBE-grown films of REFe 2 (RE, rare earth) compounds are not the same as those in the bulk. This is due to the presence of a shear strain ε xy , frozen-in during crystal growth. In this paper, magnetic anisotropy parameters for [110] MBE-grown REFe 2 films, that directly involve the shear strain ε xy , are presented and discussed. In addition to the usual first-order Callen and Callen termK 2 , there are nine second-order terms, six of which involve cross-terms between ε xy and the cubic crystal field terms B 4 and B 6 . Two of the second-order cross-terms are identified as being important:K 242 (T ) andK 264 (T ). Of these, the rank-two termK 242 (T ) dominates over a large temperature range. It has the same angular dependence as the first-order termK 2 , but with a more rapid temperature dependence. The correction at T = 0 K for TbFe 2 , DyFe 2 , HoFe 2 , ErFe 2 and TmFe 2 , amounts to ∼+9.2%, −13.9%, −11.6%, +14.3%, and 27.1%, respectively. Similar comments are made concerning the rank-fourK 264 (T ) term.

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Strain-induced magnetic anisotropy in single-crystalRFe2(110)thin films(R=

Cited by 72 publications

References 19 publications

Origin of Perpendicular Magnetic Anisotropy in Tb-Fe Amorphous Alloy

Origin of Perpendicular Magnetic Anisotropy in Tb-Fe Amorphous Alloy

Micromagnetic Modelling of the Dynamics of Exchange Springs in Multi-Layer Systems

Magnetic anisotropy terms in [110] MBE-grown REFe₂films involving the strain term ε_xy

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Strain-induced magnetic anisotropy in single-crystalRFe2(110)thin films(R=

Cited by 72 publications

References 19 publications

Origin of Perpendicular Magnetic Anisotropy in Tb-Fe Amorphous Alloy

Origin of Perpendicular Magnetic Anisotropy in Tb-Fe Amorphous Alloy

Micromagnetic Modelling of the Dynamics of Exchange Springs in Multi-Layer Systems

Magnetic anisotropy terms in [110] MBE-grown REFe2films involving the strain term εxy

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Magnetic anisotropy terms in [110] MBE-grown REFe₂films involving the strain term ε_xy