High-frequency magnetoimpedance effect in meander-line trilayered films

Melo, A.S.; Bohn, F.; Ferreira, Armando; Vaz, F.; Corrêa, M.A.

doi:10.1016/j.jmmm.2020.167166

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…However, at a thickness of several hundreds of nanometres, FeNi films can demonstrate the transition into the so-called “transcritical” state. This state is characterized by an increase in the coercive force H c , appearance of the stripe domains, existence of so-called “rotatable anisotropy” and particular shape of the magnetic hysteresis loop [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. An indispensable condition for the possibility of a transition is the presence of perpendicular magnetic anisotropy in the sample, while the quality factor Q = K p /2πM s , where K p is the perpendicular anisotropy constant, M s is the saturation magnetization of the sample, which should be less than unity.…”

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of FeNi Films and FeNi-Based Trilayers with Out-of-Plane Magnetization Component

Svalov

Gorkovenko

Larrañaga

et al. 2022

Sensors

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FeNi films of different thickness and FeNi/(Fe, Co)/FeNi trilayers were prepared by magnetron sputtering deposition onto glass substrates. The permalloy films had a columnar microstructure. The detailed analysis of the magnetic properties based on the magnetic and magneto-optical measurements showed that at thicknesses exceeding a certain critical thickness, hysteresis loops acquire a specific shape and the coercive force of the films increase sharply. The possibility of the estimation of the perpendicular magnetic anisotropy constant using the Murayama equation for the thickness dependence of saturation field was demonstrated. The results of studies of the structural and magnetic properties of FeNi films laminated by Fe and Co spacers with different thickness are presented.

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Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of FeNi Films and FeNi-Based Trilayers with Out-of-Plane Magnetization Component

Svalov

Gorkovenko

Larrañaga

et al. 2022

Sensors

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“…In addition, it has been found that the meander (winding) sample geometry has a higher MI ratio magnitude due to mutual induction between the nearest meander line [10][11][12]. The stress effect also is reported to modify the MI ratio [13]. Permalloy of Ni80Fe20 is widely used for the realization of highly sensitive MI sensors because they are soft magnetic materials with high permeability (~10000) [14].…”

Section: Introductionmentioning

confidence: 99%

Saccharin Dependence of Magnetoimpedance Ratio in Electrodeposited Permalloy Multilayer Structure on Meandered-Copper Printed-Circuit-Board Substrates

Sutomo,

Kusumawardhani,

Yasmin

et al. 2023

Trends Sci

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The effect of saccharin concentration on magnetoimpedance ratio in multilayer permalloy structure i.e., [NiFe/Cu/NiFe]3/Cu/[NiFe/Cu/NiFe]3 on Cu printed circuit board (PCB) meander substrates have been discussed. The multilayer [NiFe/Cu/NiFe]3/Cu/[NiFe/Cu/NiFe]3 structure was prepared by using the electrodeposition method. The results of XRF characterization show that the composition of Ni:Fe is close to the calculation mol ratio permalloy of 80:20. The magnetoimpedance effect is evaluated by total impedance measurement at the various magnetic fields. The typical increase of the magneto-impedance ratio with frequency confirms in this experiment. Here, the magnetoimpedance ratio modifies from 0.07 to 1.63 % for frequency measurements of 20 and 100 kHz, respectively. Finally, the MI ratio monotonically decreases with an increase in additive saccharin concentration. The MI ratio slightly decreases by 17.17 % (=(1.63-1.35)/1.63) for additive saccharin concentration increase of 1 to 2 g/L. Then MI ratio drastically decreases by 40.0 % (=(1.35-0.81)/1.35) in the change of additive saccharin concentration from 2 to 4 g/L. Here, the change in the morphological surface should attribute to the decrease in the MI ratio. HIGHLIGHTS Multilayer [NiFe/Cu/NiFe]3/Cu/[NiFe/Cu/NiFe]3 structure on Cu PCB meander substrates has been successfully fabricated by electrodeposition procedure. The magneto-impedance effect of the multilayer samples has been successfully showed at low frequency of ~kHz order. The saccharine as an additive material for electrodeposition procedure can modify the magneto-impedance effect of the multilayer sample. GRAPHICAL ABSTRACT

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“…The combination of multilayer structures and meander patterns has the opportunity to increase the sensitivity of magnetoimpedance-based sensors (Vilela et al, 2017;Kilic et al, 2018;Kikuchi et al, 2020;De Melo et al, 2020). This research studies the multilayer symmetry and non-symmetry but with the same total thickness of the multilayer.…”

Section: Introductionmentioning

confidence: 99%

The Influence of AC Driving Current on Magnetoimpedance in [Ni80Fe20/Cu]x/Cu/[Ni80Fe20/Cu]6-x Multilayers

Rusydan

Ismail

Sutomo

et al. 2021

J. Phys.: Theor. Appl.

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The phenomenon of magnetoimpedance in the multilayer configuration of [Ni80Fe20/Cu]x/Cu/[Ni80Fe20/Cu]6-x with x = 1, 2, and 3 has been successfully investigated. The electrodeposition method used for the multilayer film preparation on the meander pattered of Cu PCB. The obtained multilayer samples were evaluated the MI effect at room temperature with a frequency of 100 kHz. Here, the MI effects were evaluated for a variation of the AC driving current i.e. IAC = 4 mA, 8 mA, 12 mA, 16 mA, and 20 mA. The MI measurement results show that the multilayer x = 3 has the largest MI ratio and the multilayer with x = 1 was the smallest one. It is indicated that interlayer coupling contributes to the MI effect. Whereas the skin depth also confirms to contribute the MI ratio that showed the MI ratio increase with the increase of the I<sub>AC</sub>.

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High-frequency magnetoimpedance effect in meander-line trilayered films

Cited by 8 publications

References 29 publications

Structural and Magnetic Properties of FeNi Films and FeNi-Based Trilayers with Out-of-Plane Magnetization Component

Structural and Magnetic Properties of FeNi Films and FeNi-Based Trilayers with Out-of-Plane Magnetization Component

Saccharin Dependence of Magnetoimpedance Ratio in Electrodeposited Permalloy Multilayer Structure on Meandered-Copper Printed-Circuit-Board Substrates

The Influence of AC Driving Current on Magnetoimpedance in [Ni80Fe20/Cu]x/Cu/[Ni80Fe20/Cu]6-x Multilayers

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