Soft-magnetic properties and structure of Fe/CoNbZr multilayers

Dirne, F.W.A.; Broeder, F. J. A. den; Tolboom, J. A. M.; Wit, H.J. de; Witmer, C.H.M.

doi:10.1063/1.100238

Cited by 50 publications

(2 citation statements)

References 6 publications

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“…Various reports on the variation of H c in multilayers are available in the literature. In as-deposited Fe-N/Al multilayers, Barnard et al 25 27 for Fe/CoNbZr multilayers. Most of the aforementioned results were obtained on samples with a constant thickness of the nonmagnetic layers.…”

Section: Hysteresis Behaviormentioning

confidence: 99%

Influence of interstitial nitrogen on the structural and magnetic properties of FeCoV/TiNx multilayers

Kumar

Böni

2002

Journal of Applied Physics

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Influence of dynamical dipolar coupling on spin-torque-induced excitations in a magnetic tunnel junction nanopillar J. Appl. Phys. 111, 07C906 (2012) Quasi-omnidirectional electrical spectrometer for studying spin dynamics in magnetic tunnel junctions Rev. Sci. Instrum. 83, 024710 (2012) Thermal-magnetic-electric oscillator based on spin-valve effect J. Appl. Phys. 111, 044315 (2012) Dependence of spin-transfer switching characteristics in magnetic tunnel junctions with synthetic free layers on coupling strength J. Appl. Phys. 111, 07C905 (2012) Electrical manipulation of spin polarization and generation of giant spin current using multi terminal spin injectors J. Appl. Phys. 111, 07C505 (2012) Additional information on J. Appl. Phys. FeCoV/TiN x and FeCoV/Ti multilayers having t FeCoV ϭ30-700 Å prepared by dc magnetron sputtering are investigated by x-ray diffraction, stress, and magnetization measurements. The x-ray diffraction data of the FeCoV/TiN x system show the presence of interstitial N atoms in the FeCoV layers due to reactive sputtering of Ti with nitrogen. The interstitial N causes an expansion of the FeCoV lattice in FeCoV/TiN x for small t FeCoV . However, for the samples with large t FeCoV , no lattice expansion is observed. In addition to the lattice expansion caused by the intake of N atoms, a change in the crystalline texture of FeCoV layers is also observed as indicated by the enhancement of the FeCoV͑200͒ peaks. The magnetic hysteresis measurements on the samples show that the easy direction of magnetization lies in the plane of the layers. They further show that there are easy and hard axes of magnetization within the plane of the FeCoV layers. The stress anisotropy present in the plane of the samples induces a magnetic anisotropy through magnetostrictive effects leading to the formation of the in-plane easy axis. The hysteresis and stress measurements carried out on these samples clearly show the influence of N on the in-plane magnetic anisotropy. The magnetoelastic energy in the case of the FeCoV/TiN x system, calculated from the stress data and from the magnetization measurements as a function of t FeCoV is found to agree over a large range of thickness, whereas the curves deviate significantly for small layer thickness. This deviation may be due to the role of the FeCoVN x phase. Hysteresis measurements also show that the remanence is about 95% for all the samples of the FeCoV/TiN x system. In contrast, the coercivity increases linearly with increasing t FeCoV in this system. The coercivity of the FeCoV/Ti system is larger and increases more rapidly with t FeCoV , as compared with the FeCoV/TiN x system. This behavior is attributed to a smaller grain size in the FeCoV/TiN x system due to the reactive sputtering of the Ti layers. However, there is no significant influence of N on the saturation magnetization of both systems.

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Section: Hysteresis Behaviormentioning

confidence: 99%

Influence of interstitial nitrogen on the structural and magnetic properties of FeCoV/TiNx multilayers

Kumar

Böni

2002

Journal of Applied Physics

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“…2 in magnetic recording in the near future. 6 In the past decade, excellent soft magnetic properties have also been realized in some Fe-N-based films, [8][9][10] and some Fe/C, 11 FeC/NiFe, 12 Fe/Co-based alloy, 13,14 Fe/Co, 15 Fe/CoFe, 15 6 was deposited by a three-source magnetically filtered metal vapor vacuum arc ͑3-MF-MEVVA͒ system. The structural evolution and magnetic properties of this multilayer film during annealing processes were investigated by Rutherford backscattering spectroscopy ͑RBS͒, x-ray diffraction ͑XRD͒, vibrating sample magnetometer ͑VSM͒, and scanning atomic force microscopy ͑AFM͒ and magnetic force microscopy ͑MFM͒ experiments.…”

Section: Introductionmentioning

confidence: 99%

Structure evolution and magnetic properties of a Co/Ni/Fe multilayer film

Ding

Xia

Chiah

et al. 1999

Journal of Applied Physics

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In this article, a 16-multilayer Co/Ni/Fe film was prepared by using a three-source magnetically filtered metal vapor vacuum arc deposition system. The microstructure evolution and the variation of magnetic properties of the film during a vacuum annealing process were monitored by Rutherford backscattering spectroscopy, x-ray diffraction, vibrating sample magnetometer, scanning atomic force microscopy, and magnetic force microscopy experiments. It was found that the saturation magnetization of the film was enhanced gradually by the interdiffusion and alloying effect within the multilayers caused by vacuum annealing. Meanwhile, however, the magnetic domain grew to a larger scale progressively, and the film became magnetically harder and harder.

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Nanocrystalline Materials for video recorder heads

1991

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In present video recorders the magnetic material of the record/playback head is usually a crystalline ferrite. These materials are, however, not so suitable, when substantially finer details on the magnetic tape are required, e.g. for highdefinition television (HDTV) recording. The search for an alternative has resulted in a new type of magnetic material: mnltilayers in which crystalline iron layers of about 10 nm thickness are alternated with even thinner amorphous iron-alloy layers. These 'nanocrystalline' materials combine a high saturation magnetization with a high permeability in the MHz frequency range, allowing video recording at much increased information densities.

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Soft-magnetic properties and structure of Fe/CoNbZr multilayers

Cited by 50 publications

References 6 publications

Influence of interstitial nitrogen on the structural and magnetic properties of FeCoV/TiNx multilayers

Influence of interstitial nitrogen on the structural and magnetic properties of FeCoV/TiNx multilayers

Structure evolution and magnetic properties of a Co/Ni/Fe multilayer film

Nanocrystalline Materials for video recorder heads

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