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Pulsed interference laser heating of amorphous FeSiB ribbons
Author(s): Jan Kusinski; Olaf Czyz; Agnieszka Radziszewska; Tomasz Stobiecki; Roman Ostrowski; Marek Strzelec; Malgorzata Kac
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Paper Abstract

The influence of Q-switched pulsed Nd:YAG laser interference heating parameters on microstructure and magnetic properties of amorphous Fe80Si11B9 alloy was examined. Different laser pulse energy and a variable number of consecutive pulses were used. Results were compared with amorphous and conventionally annealed ribbons. Microstructural analysis, using light, scanning and transmission electron microscopy, was complemented by results of AFM and Mössbauer spectroscopy, as well as measurements of magnetic properties (vibrating sample magnetometer). Periodically distributed crystallized micro-areas, ~10 μm in diameter, in the amorphous matrix were produced by the laser treatment. Laser heating produced nanograin crystalline structure in the amorphous matrix. While after the conventional annealing – dendritic structure was observed. The magnetic hysteresis loop measurement showed that laser heating had no significant influence on soft magnetic properties. Magnetization measurements showed that the as-cast ribbon and laser light irradiated samples are magnetically soft materials. The results lead to the conclusion that the dots corresponding to the laser modified regions exhibit a perpendicular magnetic anisotropy. Magnetic force microscopy showed expanded magnetic structure in laser heated microareas, while the amorphous matrix did not give any magnetic signal.

Paper Details

Date Published: 4 December 2018
PDF: 10 pages
Proc. SPIE 10974, Laser Technology 2018: Progress and Applications of Lasers, 109740Y (4 December 2018); doi: 10.1117/12.2521182
Show Author Affiliations
Jan Kusinski, AGH Univ. of Science and Technology (Poland)
Olaf Czyz, AGH Univ. of Science and Technology (Poland)
Agnieszka Radziszewska, AGH Univ. of Science and Technology (Poland)
Tomasz Stobiecki, AGH Univ. of Science and Technology (Poland)
Roman Ostrowski, Military Univ. of Technology (Poland)
Marek Strzelec, Military Univ. of Technology (Poland)
Malgorzata Kac, Institute of Nuclear Physics (Poland)


Published in SPIE Proceedings Vol. 10974:
Laser Technology 2018: Progress and Applications of Lasers
Jan K. Jabczynski; Ryszard S. Romaniuk, Editor(s)

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