Magnetization reversal in amorphous Fe/Dy multilayers: A Monte Carlo study

Talbot, Etienne; Ledue, D.; Berche, Pierre-Emmanuel

doi:10.1063/1.3157929

Cited by 4 publications

(3 citation statements)

References 25 publications

(35 reference statements)

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“…This allows investigating the temperature effect on hysteresis loops with reasonable computer time. 48 The soft nanocluster embedded in the matrix is of 5 nm radius. Three cases were considered.…”

Section: Resultsmentioning

confidence: 99%

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Atomic-Scale Investigation of SmCo₅/α-Fe Nanocomposites: Influence of Fe/Co Interdiffusion on the Magnetic Properties

et al. 2013

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The nanostructure of SmCo 5 /α-Fe nanocomposites elaborated by high-energy ball milling was investigated using atom probe tomography. This high-resolution technique allowed obtaining in the real space a 3D mapping of the chemical species (Sm, Co, and Fe) on the atomic scale. 3D reconstructions of the nanostructure of the analyzed samples were realized from the data and show that the majority of the SmCo 5 /α-Fe nanocomposite is composed of α-Fe(Co) soft magnetic nanosized crystallites embedded in a Sm-(Co,Fe) hard magnetic matrix. These results confirm the formation of the α-Fe(Co) phase and the contamination of the initial SmCo 5 by Fe atoms. The interfaces between the α-Fe(Co) soft magnetic phase and the Sm-(Co,Fe) hard magnetic phase were also chemically analyzed on the atomic scale. Large graded interfaces were evidenced. Monte Carlo simulations assuming a linear variation of the anisotropy in the intermixed interface between the Sm-(Co,Fe) and the Fe(Co) regions indicate that the Fe/Co interdiffusion can lead to an increase in the coercive field.

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Section: Resultsmentioning

confidence: 99%

“…A change in R modifies the acceptance rate, thus optimizing the efficiency of the algorithm. This allows investigating the temperature effect on hysteresis loops with reasonable computer time …”

Section: Resultsmentioning

confidence: 99%

Atomic-Scale Investigation of SmCo₅/α-Fe Nanocomposites: Influence of Fe/Co Interdiffusion on the Magnetic Properties

et al. 2013

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“…We observe that, due to the antiparallel orientation of the magnetization of the DyFe 2 and YFe 2 layers at low temperature, the ratio of the thicknesses which leads to a compensated magnetic state at T ¼0 and without any magnetic field is e DyFe 2 =e YFe 2 ¼ 0:5. Finally, the estimated values of the firstneighbors exchange interactions, already used in previous studies of Fe-Dy multilayers [15] except those concerning the Y atoms, are given in Table 1.…”

Section: Model and Numerical Simulationsmentioning

confidence: 99%

A Monte Carlo study of the magnetization reversal in DyFe2/YFe2 exchange-coupled superlattices

Djedai¹,

Talbot²,

Berche³

2014

Journal of Magnetism and Magnetic Materials

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Monte Carlo simulations are used to perform an atomic scale modeling of the magnetic properties of epitaxial exchange-coupled DyFe 2 /YFe 2 superlattices. These samples, extremely well-researched experimentally, are constituted by a hard ferrimagnet DyFe 2 and a soft ferrimagnet YFe 2 antiferromagnetically coupled. Depending on the layers' thickness and on the temperature, the field dependence of the magnetization depth profile is complex going from a unique giant ferromagnetic block to exchange spring behavior when the soft YFe 2 layers reverse for positive bias fields. In some particular conditions of temperature and layers' thicknesses, it can even be easier to reverse the hard thin DyFe 2 layers for positive fields, while the soft thick YFe 2 layers keep their magnetization along the field. In this work, we reproduce by Monte Carlo simulations hysteresis loops for the net and compound-specific magnetizations at different temperatures, and assess the quality of the results by a direct comparison to experimental hysteresis loops.

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Interfacial roughness and temperature effects on exchange bias properties in coupled ferromagnetic/antiferromagnetic bilayers

Maitre

Ledue

Patte

2012

Journal of Magnetism and Magnetic Materials

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Magnetization reversal in amorphous Fe/Dy multilayers: A Monte Carlo study

Cited by 4 publications

References 25 publications

Atomic-Scale Investigation of SmCo₅/α-Fe Nanocomposites: Influence of Fe/Co Interdiffusion on the Magnetic Properties

Atomic-Scale Investigation of SmCo₅/α-Fe Nanocomposites: Influence of Fe/Co Interdiffusion on the Magnetic Properties

A Monte Carlo study of the magnetization reversal in DyFe2/YFe2 exchange-coupled superlattices

Interfacial roughness and temperature effects on exchange bias properties in coupled ferromagnetic/antiferromagnetic bilayers

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Magnetization reversal in amorphous Fe/Dy multilayers: A Monte Carlo study

Cited by 4 publications

References 25 publications

Atomic-Scale Investigation of SmCo5/α-Fe Nanocomposites: Influence of Fe/Co Interdiffusion on the Magnetic Properties

Atomic-Scale Investigation of SmCo5/α-Fe Nanocomposites: Influence of Fe/Co Interdiffusion on the Magnetic Properties

A Monte Carlo study of the magnetization reversal in DyFe2/YFe2 exchange-coupled superlattices

Interfacial roughness and temperature effects on exchange bias properties in coupled ferromagnetic/antiferromagnetic bilayers

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Product

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Atomic-Scale Investigation of SmCo₅/α-Fe Nanocomposites: Influence of Fe/Co Interdiffusion on the Magnetic Properties

Atomic-Scale Investigation of SmCo₅/α-Fe Nanocomposites: Influence of Fe/Co Interdiffusion on the Magnetic Properties