Reversible hysteresis loop tuning

Berger, Andreas; Binek, Christian; Margulies, D. T.; Möser, Andreas; Fullerton, Eric E.

doi:10.1016/j.physb.2005.10.040

Cited by 13 publications

(8 citation statements)

References 15 publications

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“…17 Details of the sample fabrication can be found elsewhere. 15,16 In the left frame of Fig. 1 the dotted line shows the overall magnetic hysteresis loops m vs 0 H, where m is the magnetic moment and H is the applied magnetic field.…”

Section: Experimental Details and Resultsmentioning

confidence: 99%

“…Antiferromagnetically coupled HL/SL bilayers are not only important in magnetic recording technology but can also be used as model systems to study EB and its related effects. [15][16][17] HL/SL systems have several advantages over conventional AF/FM systems. For example, a FM pinning layer provides unique experimental access to the change in its magnetization state.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the dependence of the bias field on the pinning layer magnetization can be directly measured by simple magnetometry. 15,16 Moreover, AF materials are naturally inert to applied magnetic fields which limit the control of the AF domain state. Hence, isothermal tuning of the EB field and its training is very much limited to rare AF/FM systems.…”

Section: Introductionmentioning

confidence: 99%

“…Interestingly, and as an experi-mental big advantage, the HL magnetization can be isothermally tuned by a specific magnetic-field protocol. 16 It is given by initial saturation and subsequent demagnetization of the HL unlike the tedious field-cooling procedure in AF/FM systems. Moreover, T dependence of the TE is also expected in HL/SL systems due to the temperature dependence of the HL domain state and its thermally assisted approach toward equilibrium on SL cycling.…”

Section: Introductionmentioning

confidence: 99%

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Temperature dependence of the training effect in exchange coupled ferromagnetic bilayers

et al. 2008

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The temperature dependence of the training effect is studied in an exchange coupled thin-film bilayer composed of a hard ferromagnetic pinning ͑CoPtCrB͒ layer in proximity of a soft ferromagnetic pinned ͑CoCr͒ layer. Interlayer exchange shifts the hysteresis loops of the soft layer along the magnetic-field axis. This shift is quantified by the bias field in far reaching analogy to the exchange bias field of conventional antiferromagnetic/ferromagnetic heterostructures. A ferromagnetic domain state induced in the hard layer experiences aging very similar to the training behavior of the antiferromagnetic domain state in conventional exchange bias systems. Training originates from changes in the spin structure of the pinning layer with consecutive magnetization reversals of the pinned layer. Here we perform a detailed investigation of the temperature dependence of the bias field and its training effect. Consecutively cycled hysteresis loops of the soft layer are measured at various temperatures. We also derive a theoretical description of the temperature dependence of the training effect which is in agreement with the experimental data.

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Section: Experimental Details and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temperature dependence of the training effect in exchange coupled ferromagnetic bilayers

et al. 2008

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“…The data in Fig. 2 also show that with increasing absolute value of the set field the resulting absolute bias field decreases, which simply reflects the fact that the absolute value of the HL magnetization is further reduced [20].…”

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confidence: 80%