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Digitale Medien

Magnetic and structural properties of iron/amorphous iron alloy multilayers (1990)

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

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 67 (1990), S. 5131-5133

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ISSN: 1089-7550

Quelle: AIP Digital Archive

Thema: Physik

Notizen: The magnetic and structural properties of ion-beam and rf sputtered Fe/amorphous FeCrB multilayers were studied as a function of Fe and FeCrB layer thicknesses. The material is magnetically soft [μ (10 MHz)≈2000, Hc〈100 A/m] and has a saturation magnetization ≈1.8 T if the FeCrB layer thickness is larger than 1 nm and the Fe thickness substantially lower than the domain wall thickness in Fe, 55 nm. The magnetostriction is dependent on the ratio of Fe and FeCrB layer thicknesses. Magnetostriction close to zero can be achieved, even after annealing to 350 °C. Domain patterns show the presence of a weak magnetic anisotropy.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.344664

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Digitale Medien

Soft-magnetic properties and structure of Fe/CoNbZr multilayers (1988)

Dirne, F. W. A. ; den Broeder, F. J. A. ; Tolboom, J. A. M. ; [weitere]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 53 (1988), S. 2386-2388

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ISSN: 1077-3118

Quelle: AIP Digital Archive

Thema: Physik

Notizen: The magnetic and structural properties of ion beam sputtered Fe/CoNbZr multilayers were studied as a function of the CoNbZr and Fe layer thickness. Good soft-magnetic properties (coercivity 〈40 A/m and permeability 〉1000) are obtained only when the Fe grains are small, which is the case for multilayers with Fe layer thicknesses below 10 nm and CoNbZr layer thicknesses above 4 nm. Thick CoNbZr layers (〉4 nm) are amorphous and repeated nucleation of Fe grains is observed. When the CoNbZr layers are too thin (〈3 nm) they are crystalline and do not interrupt the Fe grain growth. The resulting columnar growth of Fe throughout the total film thickness leads then to a drastic decrease of permeability and increase of coercivity.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.100238

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Digitale Medien

Structural and soft-magnetic properties of Fe/CoNbZr and Fe/FeCrB multilayers (1989)

Dirne, F. W. A. ; Tolboom, J. A. M. ; de Wit, H. J. ; [weitere]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 66 (1989), S. 748-755

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ISSN: 1089-7550

Quelle: AIP Digital Archive

Thema: Physik

Notizen: The magnetic and structural properties of ion-beam-sputtered Fe/FeCrB and Fe/CoNbZr multilayers were studied as a function of the FeCrB and CoNbZr layer thicknesses. Good soft-magnetic properties (coercivity 〈60 A/m and permeability 〉1000) are obtained only when Fe grains are small, which requires, on the one hand, multilayers with Fe layer thicknesses below 10 nm and, on the other hand, FeCrB interlayers with thicknesses above 1 nm or CoNbZr interlayers with thicknesses above 3 nm. In this case interlayers are amorphous, which induces repeated nucleation of Fe grains. Only at FeCrB thicknesses of 1 nm are the interlayers crystalline due to interface mixing. This in contrast to CoNbZr interlayers which in addition grow epitaxially in a crystalline structure up to thicknesses of 3 nm. When interlayers are crystalline columnar growth of Fe results. As a consequence coercivity increases and permeability decreases.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.343550

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