First-order-reversal-curve analysis of exchange-coupled SmCo/NdFeB nanocomposite alloys

Pan, M. X.; Zhang, Pengyue; Ge, Hongliang; Yu, Nengjun; Wu, Qiong

doi:10.1016/j.jmmm.2014.02.044

Cited by 17 publications

(7 citation statements)

References 16 publications

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“…Switching of the magnetic field to the values lying out of hysteresis loops did not stimulate magnetic relaxation in CoFeB bilayer, while same procedure causes relaxation in Pt/ Co bilayers. The values of relaxation parameters obtained by above described method can be compared with parameters extracted from first order reversal curve (FORC) map [26][27][28][29][30]. Although the data of FORC technique is obtained in sweeping magnetic field [31], while M(t) dependences were recorded in stationary magnetic field we will compare results below.…”

Section: Domain Nucleation Versus Dw Propagation In Single and Double...mentioning

confidence: 99%

Relaxation dynamics of magnetization transitions in synthetic antiferromagnet with perpendicular anisotropy

Таланцев

Lü

Fache

et al. 2018

J. Phys.: Condens. Matter

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Two synthetic antiferromagnet bilayer systems with strong perpendicular anisotropy CoFeB/Ta/CoFeB and Pt/Co/Ir/Co/Pt have been grown using sputtering techniques. For both systems two types of magnetization transitions have been studied. The first one concerns transitions from a state where magnetizations of the two magnetic layers are parallel (P state) to a state where magnetizations of the two layers are aligned antiparallel (AP state). The second one concerns transitions between the two possible antiparallel alignments (AP+ to AP-). For both systems and both transitions after-effect measurements can be understood in the frame of nucleation-propagation model. Time derivative analysis of magnetic relaxation curves and mapping of the first order reversal curves at different temperature allowed us to demonstrate the presence of different pinning centers, which number can be controlled by magnetic field and temperature.

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Section: Domain Nucleation Versus Dw Propagation In Single and Double...mentioning

confidence: 99%

Relaxation dynamics of magnetization transitions in synthetic antiferromagnet with perpendicular anisotropy

Таланцев

Lü

Fache

et al. 2018

J. Phys.: Condens. Matter

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show abstract

“…The above-described sequences were repeated in the 240-350 K temperature range. The values of relaxation depths and times obtained by this method can also be found from the first order reversal curve (FORC) diagrams [13][14][15]. However, in the FORC technique time dependence of magnetization is recorded while sweeping the magnetic field.…”

Section: B Competition Between Domain Nucleation and Domain-wall Promentioning

confidence: 99%

“…12 can be explained by the difference of the magnetic anisotropy in the above-discussed layers. The experimental technique described above can be considered as the development of the famous modern method of studying magnetic relaxation (FORC) [13][14][15]. Multiple measurements of magnetic relaxation in different conditions (field and temperature) can provide a 2D map of relaxation parameters in the case of the unified approach for their extraction.…”

Section: B Competition Between Domain Nucleation and Domain-wall Promentioning

confidence: 99%

Magnetic aftereffects in CoFeB/Ta/CoFeB spin valves of large area

et al. 2017

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Magnetic aftereffect measurements on a synthetic antiferromagnet with strong perpendicular anisotropy are presented. Two types of magnetic transitions are observed in the CoFeB/Ta/CoFeB bilayer where the two ferromagnetic CoFeB layers are antiferromagnetically coupled: the transition from a parallel to an antiparallel CoFeB layers magnetization alignment and the transition between two possible antiparallel magnetization states. Magnetic relaxation measurements show a complete reversal in the case of the transition between the two antiferromagnetic configurations. The experimental data can be well fitted in the frame of extended exponential relaxation using the Fatuzzo-Labrune model. Consequently, the domain nucleation and domain-wall propagation can be studied as a function of temperature and applied field.

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“…The use of FORC diagrams became a frequently used tool to study different kind of magnetic systems [1][2][3][4][5][6][7][8][9][10][11][12]. As this method provides more information than conventional hysteresis cycles from the same type of experiment, its use has been increased considerably in recent years.…”

Section: Introductionmentioning

confidence: 99%

Quantitative study of FORC diagrams in thermally corrected Stoner– Wohlfarth nanoparticles systems

Biasi

Curiale

Zysler

2016

Journal of Magnetism and Magnetic Materials

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First-order-reversal-curve analysis of exchange-coupled SmCo/NdFeB nanocomposite alloys

Cited by 17 publications

References 16 publications

Relaxation dynamics of magnetization transitions in synthetic antiferromagnet with perpendicular anisotropy

Relaxation dynamics of magnetization transitions in synthetic antiferromagnet with perpendicular anisotropy

Magnetic aftereffects in CoFeB/Ta/CoFeB spin valves of large area

Quantitative study of FORC diagrams in thermally corrected Stoner– Wohlfarth nanoparticles systems

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