Static and dynamic magnetic properties of Fe films

Getman, Andriy; Sivov, A A; Перов, Н. С.; Iakubov, I. T.; Rozanov, Konstantin N.; Ryzhikov, I. A.; Starostenko, S. N.

doi:10.1016/j.jmmm.2003.12.697

Cited by 5 publications

(6 citation statements)

References 2 publications

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“…So large-volume fractions of ferromagnetic constituent in the laminate are necessary. With the increase of film thickness, the microwave permeability of films degenerates because of both effect of eddy currents [9] and appearing of out-ofplane magnetization [10] . For these effects to be avoided, laminates of thin ferromagnetic layers are useful.…”

Section: Resultsmentioning

confidence: 99%

Microwave magnetic properties of laminates with thin FeCoBSi films

Jiang

Yang

et al. 2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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The microwave permeability of laminated composites based on thin FeCoBSi fi lms was under study. The level of permeability increased with increasing of the ferromagnetic inclusions in the laminates. The intrinsic permeability spectra of ferromagnetic inclusion are parametrically reconstructed. The obtained parameters of magnetic resonance were specially analyzed. To avoid the effect of eddy current and to obtain large-volume fractions of ferromagnetic constituent, laminates consisting of alternating FeCoBSi/SiO 2 multilayers and mylar substrates were also investigated. For the same volume fractions of ferromagnetic constituent (8.7%), laminates based on multi-layered fi lms are found to possess higher values of permeability than those based on one-layered fi lms.

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Section: Resultsmentioning

confidence: 99%

Microwave magnetic properties of laminates with thin FeCoBSi films

Jiang

Yang

et al. 2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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“…In reality it is impossible to exclude the gaps between the sample and the cell base (see Fig. 1), therefore the film is irradiated from both surfaces (mind that δ is a single side penetration depth) and the measured permeability µ meas is related to film intrinsic permeability [5,11] µ f ilm as…”

Section: Effect Of Eddy Currentsmentioning

confidence: 99%

“…The SB-FMR technique is much more sensitive [2,3], the sample is uniformly magnetised but the calculated permeability data may differ from that ones obtained under zero bias and the technique is poorly suited for measurements within a range of frequencies. The SF-VNA measurements are performed under non-zero external bias as well [5,6], but the sensitivity of SF-VNA technique is much lower than that of SB-FMR one even in case of the resonance enhancement [7] as the measurement errors (the signal to noise ratio, SNR) are defined by calibration accuracy of a measurement cell [4]. The SF-VNA measurements are usually performed either in a coaxial line or in a strip-line.…”

Section: Introductionmentioning

confidence: 99%

“…The coaxial cell is readily calibrated by standard technique [8] and is much more uniform than the strip line. The problem is that the measured washer samples are usually wound of film stripes, therefore the coaxial measurements are limited to flexible substrates and the obtained data are distorted by magnetostriction [5,6,10,11]. The stripe cells are calibrated less accurately and the measurements inherit the problems of radiation into surrounding space [4,7].…”

Section: Introductionmentioning

confidence: 99%

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The Study of Structure-Dependent Properties of Thin Magnetic Films at Microwaves by Field-Domain Resonance Technique

Starostenko¹,

Rozanov²

2009

PIER C

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Abstract-The strip-line frequency-domain technique for permeability measurement is compared to the field domain technique. The combined setup for microwave measurement of thin film permeability with both techniques is proposed. The field-domain technique is less affected by inhomogeneity of measurement strip cell and has significantly higher signal-to-noise ratio, but the obtained parameters are affected by film thickness and may differ from that of the frequency-domain technique. Analysis of the field-domain data obtained at a set of frequencies makes it possible to determine the saturation magnetisation, the anisotropy field and the damping factor without the knowledge of the amount of substance under study. In case of a simple permeability spectrum the data on metal thickness make it possible to estimate the effective skin-depth as well. The technique is tested by simulation and is applied to determine permeability of Fe-based films vacuum-sputtered on glassceramic and polymer substrates.

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“…The form of hysteresis loops of the films under study reveals the absence of stripe domain structure. No marked perpendicular anisotropy is observed [3].…”

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confidence: 91%