Room temperature magneto optic exchange springs in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:msub><mml:mrow><mml:mi>DyFe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:mo>/</mml:mo><mml:msub><mml:mrow><mml:mi>YFe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math> superlattices

Wang, D.; Morrison, C.; Buckingham, A.R.; Bowden, G. J.; Ward, R. C. C.; Groot, P.A.J. de

doi:10.1016/j.jmmm.2008.09.031

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…С другой стороны, такие сплавы в составе многослойных гетероструктур проявляют необычные магнитные свойства. Например, интерес представляет эффект обменной пружины, возникающий в многослойных магнитных структурах, состоящих из чередующихся магнитомягких и магнитожестких слоев, связанных обменным взаимодействием [4,5]. Для контроля межслоевого взаимодействия в качестве определяющего параметра при создании структуры обменной пружины с заданными характеристиками предпринимаются попытки введения дополнительных " управляющих" немагнитных слоев между магнитными слоями.…”

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Оптические и магнитные свойства трехслойных систем Dy-=SUB=-x-=/SUB=-Co-=SUB=-1-x-=/SUB=-/Bi/Py

Kosyrev¹,

Яковчук²,

Patrin³

et al. 2021

Письма В Журнал Технической Физики

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The optical and magneto-optical properties of the DyxCo1-x/Bi/NiFe three-layer systems are presented. The magneto-optical Kerr effect to study the temperature dependence of the magnetization and spectroscopic ellipsometry to obtain optical constants were used. It is shown that the thickness of the bismuth interlayer affects the exchange interaction between the NiFe and DyCo layers, which is manifested in a change of the magnetisation compensation temperature.

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Оптические и магнитные свойства трехслойных систем Dy-=SUB=-x-=/SUB=-Co-=SUB=-1-x-=/SUB=-/Bi/Py

Kosyrev¹,

Яковчук²,

Patrin³

et al. 2021

Письма В Журнал Технической Физики

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“…The effective field, H eff , contains contributions from the Zeeman interaction and magnetocrystalline anisotropy (K), while α and γ are the Gilbert damping parameter and gyromagnetic ratio, respectively. Values for the magnetization (M s ¼ 490, M h ¼ 760 emu=cm 3 ), uniaxial magnetocrystalline anisotropy constant (K s ¼ 1 × 10 2 , K h ¼ 7 × 10 5 J=m 3 ) and intralayer (A s;h ¼ 1.5 × 10 −11 J=m) and interlayer (A I ¼ −1.5 × 10 −11 J=m) exchange constants were taken from a previous micromagnetic calculation [22] direction (see Fig. 1, inset).…”

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confidence: 99%

Ultrafast Optical Parametric Pumping of Magnetization Reorientation and Precessional Dynamics inDyFe2/YFe2Exchange Springs

et al. 2014

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The magnetization dynamics of a wound ½DyFe 2 ð20 ÅÞ=YFe 2 ð80 ÅÞ ×40 exchange spring multilayer have been explored in optical pump probe experiments. Ultrafast optical heating was used to modify the magnetic parameters of the multilayer, while the time resolved magneto-optical Kerr effect was used to probe its response. Although the probe signal is dominated by precession and winding of the exchange spring within the soft YFe 2 layer, reorientation of the DyFe 2 hard-layer magnetization is detected on time scales less than 100 ps. Micromagnetic simulations reproduce the main features of the experimental data and indicate a dramatic optically induced reduction of the hard-layer anisotropy. The results establish the feasibility of switching a spring system by means of parametric excitation.

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Exchange-spring driven spin-flop transition in DyFe 2 /YFe 2 superlattices

Wang

Buckingham

Bowden

et al. 2016

Journal of Magnetism and Magnetic Materials

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Exchange-spring driven spin-flop transition is observed in hysteresis loops of an antiferromagnetic [DyFe 2 40Å/YFe 2 160Å] × 20 superlattice at temperatures higher than 100 K, with field along the in-plane easy axis [110]. OOMMF micromagnetic simulation reveals that this transition is derived from the magnetoelastic interaction in DyFe 2 . Conventional exchange spring behavior is also observable at smaller fields. Simulation shows that it is caused by the simultaneous rotation of the magnetization vectors of both the hard and soft layers towards [010]. Experiment and simulation agree qualitatively with each other.

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Room temperature magneto optic exchange springs in DyFe2/YFe2 superlattices

Cited by 7 publications

References 34 publications

Оптические и магнитные свойства трехслойных систем Dy-=SUB=-x-=/SUB=-Co-=SUB=-1-x-=/SUB=-/Bi/Py

Оптические и магнитные свойства трехслойных систем Dy-=SUB=-x-=/SUB=-Co-=SUB=-1-x-=/SUB=-/Bi/Py

Ultrafast Optical Parametric Pumping of Magnetization Reorientation and Precessional Dynamics inDyFe2/YFe2Exchange Springs

Exchange-spring driven spin-flop transition in DyFe 2 /YFe 2 superlattices

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