Advanced structure research methods of amorphous Co69Fe4Cr4Si12B11 microwires with giant magnetoimpedance effect: Part 1 – Crystallization kinetics and crystal growth

Elmanov, G.N.; Kozlov, Ilya; Irmagambetova, Saule M.; Prikhod’ko, K. E.; Светогоров, Р. Д.; Чернавский, П. А.; Lukyanchuk, A. A.; Shutov, Anton M.; Разницын, О. А.; Тарасов, В. П.; Гудошников, С.А.

doi:10.1016/j.jallcom.2021.159710

Cited by 7 publications

(1 citation statement)

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“…The optimum magnetic properties for the singleand two-step DC annealing were obtained using parameters of 0.08 A for 60 s and 0.1 A for 10 s followed by 0.05 A for 50 s, respectively (figure 3). The observed improvement is ascribed to the thermal effects of DC annealing, which helps to release internal stress and promotes structural relaxation and the formation of nanocrystals [35]. This assumption is confirmed by the reduction of crystallization enthalpy shown in figure 2.…”

Section: Discussionmentioning

confidence: 54%

Optimizing the magnetic and giant magneto-impedance (GMI) properties of glass-coated amorphous Co-based wires via single- and two-step direct current annealing

Liu¹,

Liu²,

Xu³

et al. 2022

J. Phys. D: Appl. Phys.

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The effect of both single- and two-step direct current (DC) annealing procedures on the magnetic properties including giant magneto-impedance (GMI) of glass-coated Co66Fe6Si13B15 amorphous wires was evaluated. The GMI ratio initially increased with current intensity and reached a peak value before declining at higher current intensities for both methods. A maximum improvement of the GMI ratio by about 5 times was obtained for the two-step DC annealed sample, while that for single-step DC annealed samples was only 2.44 times. A higher GMI sensitivity is also observed for the two-step DC annealed wires. The better GMI performance for two-step DC annealed samples was attributed to the more homogeneously distributed precipitations in the matrix and ordered circumferential magnetic domains on the surface. The obtained result further implies that DC annealing with higher current intensity but shorter treatment time is a more efficient and energy-saving method to enhance the GMI performance for the Co-based amorphous wires with respect to potential industrial application.

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Section: Discussionmentioning

confidence: 54%