Abstract

The paper presents results of structural and magnetic properties investigation of partially crystallized Fe62Co10Y8B20 and Fe61Co10Y8Cu1B20 alloys. Multicomponent bulk amorphous alloys exhibit a significant sensitivity to the composition changes. Even a small quantitative element substitution in composition of the initial alloy may lead to substantial changes in its various properties. Samples in form of thin plates were obtained by radial cooling method resulting in a complete amorphous structure material. Then, the one-step controlled heat treatment process led to partial crystallization of the sample causing the coexistence of amorphous matrix and embedded nanocrystalline phases. As shown in article, amorphous matrix has a noticeable influence on nano-sized grains resulting in a deformation of primary cell structure. Isothermal annealing process also had an impact on the magnetic properties of obtained samples, which was examined by the vibrating sample magnetometer (VSM).

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