Effect of deposit conditions on magnetic parameters of electroless CoFeB films

Shen, Xiang; Li, Haifeng; Li, Haihua; Nie, Jianghua

doi:10.1007/s10854-008-9719-9

Cited by 3 publications

(1 citation statement)

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“…In this spirit, for some years now, our group has carried out an intensive search for different ferromagnetic alloys for the growth of multilayers [14,15,16]. CoFe alloys have great technological potential, being used, for example, in applications such as microwave absorbers [17], shielding materials [18], strain gauges [19] and magnetic random access memories (MRAMs) [20]. For this reason, we carried out a study of the magnetic and structural properties, as well as the MI effect, of multilayers where the ferromagnetic material is a CoFeB alloy and the non-magnetic metallic (NM) spacer material is Ta, Ag and Cu.…”

Section: Introductionmentioning

confidence: 99%

High frequency magnetic behavior through the magnetoimpedance effect in CoFeB/(Ta, Ag, Cu) multilayered ferromagnetic thin films

Marques¹,

Mori²,

Schelp³

et al. 2012

Thin Solid Films

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We studied the dynamics of magnetization through an investigation of the magnetoimpedance effect in CoFeB/(Ta, Ag, Cu) multilayered thin films grown by magnetron sputtering. Impedance measurements were analyzed in terms of the mechanisms responsible for their variations at different frequency intervals and the magnetic and structural properties of the multilayers. Analysis of the mechanisms responsible for magnetoimpedance according to frequency and external magnetic field showed that for the CoFeB/Cu multilayer, ferromagnetic resonance (FMR) contributes significantly to the magnetoimpedance effect at frequencies close to 470 MHz. This frequency is low when compared to the results obtained for CoFeB/Ta and CoFeB/Ag multilayers and is a result of the anisotropy distribution and non-formation of regular bilayers in this sample. The MI max values occurred at different frequencies according to the used non-magnetic metal. Variations between 25% and 30% were seen for a localized frequency band, as in the case of CoFeB/Ta and CoFeB/Ag, as well as for a wide frequency range, in the case of CoFeB/Cu.

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