Amorphous metal alloys (AMA) are referred to multi-functional advanced materials with the properties of metal and glass. They are also called metallic glasses or glassy metals. The properties of amorphous materials are related to a disordered structure and are very sensitive to structural changes. Several methods are used for structure optimization, leading to properties improvement. Laser processing has proven itself as an effective method of modifying the amorphous structure and micro processing of amorphous material [1, 2, 3].  The advantage of the laser method is a wide variety of space-temperature-time conditions that can be created for the transformation of the structure, in particular at the local microscale level and in thin surface layers. In our work, laser processing was applied to amorphous ribbons based on Co-Si-B and Fe-Si-B to design amorphous-nanocrystalline gradient structured material (GSM). GSM are materials that are characterized by a given distribution of composition, structure, and properties by volume. Amorphous materials, as is known, are characterized by isotropy of structure and composition. A significant improvement in properties can be achieved by giving them differentiated properties by volume, i.e. by forming a gradient structure at the macro- and micro-levels. Local structural transformation, such as relaxation or nanocrystallization, will lead to the creation of structure inhomogeneities, the spatial distribution of which can be effectively controlled by changing the laser parameters. The present research goal is to create a heterogeneous material with artificial (controlled) anisotropy of composition, structure, and corresponding properties in one, two, or three dimensions. Different types of gradient materials based on AMA can be designed to solve specific problems, for example, with gradient magnetic, mechanical, electrical etc. properties.

References
[1] Y.S. Nykyruy, S.I. Mudry, Chapter 6. Effect of laser irradiation on the structure of IRON-based amorphous alloys, in: Maryann C. Wythers (Ed.), Advances in Materials Science Research, vol. 40, Nova Science Publishers Inc., New York, 2020, pp. 189–228.
[2] Y.S. Nykyruy, S.I. Mudry, Y.O. Kulyk, M. Lapinski, Materials Science-Poland 2021, https://doi.org/10.2478/msp-2020-0064.
[3] Y. Nykyruy, S. Mudry, I. Shtablavyi, I. Gnilitskyi, Appl. Nanosci. 2021, https://doi.org/10.1007/s13204-021-01866-9.