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The formation of hysteretic magnetic properties in amorphous alloys of various classes upon thermomagmetic treatment in a transverse magnetic field

  • Electrical and Magnetic Properties
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Abstract

In this paper, we have studied the effects of the thermomagnetic treatment in a transverse magnetic field (TMaT⊥) on the permeability of the amorphous alloy Co69Fe3.7Cr3.8Si12.5B11 with such a low saturation magnetostriction (λ s 10–7) that, in the ribbons of this alloy rolled into a toroid, a sharp longitudinal magnetic texture is observed (K sq > 0.90). It has been revealed that the permeability μ4 (H = 4 mOe, f = 1 kHz) as a function of the annealing temperature or time of holding at a temperature is described by a curve with a maximum. This maximum is observed at a coefficient of the squareness of the hysteresis loop K sq,m in the range of 0.2 ≤ K sq,m ≤ 0.4. The regimes of the TMaT have been determined that provide optimum values of the permeability μ4 (15000) without a loss of the ductile state of the ribbons of this alloy. Based on the example of an iron-based alloy of composition Fe57Co31Si2.9B9.1 with λs = 35 × 10–6, it has been shown that the formation of the hysteretic magnetic properties upon the TMaT⊥ depends substantially on the magnitude of the magnetostriction and the Curie temperature of the amorphous alloys.

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Authors and Affiliations

  1. National University of Science and Technology MISiS, Leninskii pr. 4, Moscow, 119991, Russia

    I. B. Kekalo & P. S. Mogil’nikov

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  1. I. B. Kekalo
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  2. P. S. Mogil’nikov
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Correspondence to P. S. Mogil’nikov.

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Original Russian Text © I.B. Kekalo, P.S. Mogil’nikov, 2016, published in Fizika Metallov i Metallovedenie, 2016, Vol. 117, No. 6, pp. 551–561.

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Kekalo, I.B., Mogil’nikov, P.S. The formation of hysteretic magnetic properties in amorphous alloys of various classes upon thermomagmetic treatment in a transverse magnetic field. Phys. Metals Metallogr. 117, 529–539 (2016). https://doi.org/10.1134/S0031918X16060041

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  • DOI: https://doi.org/10.1134/S0031918X16060041

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