Magnetic properties and nanocrystallization behavior of  Co-based amorphous alloy

Yu. Nykyruy; S. Mudry; Yu. Kulyk; V. Prunitsa; A. Borysiuk

doi:10.15330/pcss.24.1.106-113

Authors

Yu. Nykyruy Ivan Franko National University of Lviv, Lviv, Ukraine
S. Mudry Ivan Franko National University of Lviv, Lviv, Ukraine
Yu. Kulyk Ivan Franko National University of Lviv, Lviv, Ukraine
V. Prunitsa Ivan Franko National University of Lviv, Lviv, Ukraine
A. Borysiuk Lviv Polytechnic National University, Lviv, Ukraine

DOI:

https://doi.org/10.15330/pcss.24.1.106-113

Keywords:

Co-based amorphous alloy, DTA, thermo-magnetic curves, hysteresis, magnetic properties, X-Ray diffraction, nanocrystallization

Abstract

The magnetic properties of the amorphous Co₅₇Fe₅Ni₁₀Si₁₁B₁₇ alloy have been studied by a vibrating sample magnetometer. The temperature dependence of saturation magnetization was measured and the Curie point and crystallization onset temperature were determined as 560 K and 760 K respectively. The coercive force was obtained as 200 A/m and saturation magnetization - 65 Am²/kg. The alloy was produced in the form of a ribbon thickness of 30 µm using the melt spinning method, and its internal amorphous structure was examined by the X-ray diffraction method. The crystallization behavior of the alloy was studied using series of isothermal annealing of the samples of the alloy at temperatures in the range of 723-1023 K for different exposures (up to 240 minutes) and nanocrystalline phases were detected by the X-ray diffraction analysis.

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