Soft Magnetic Nanocrystalline Alloys for Energy Efficiency

Our laboratory develops Fe-based amorphous and nanocrystalline alloys (such as NANOPERM and NANOMET types) designed for high-sensitivity and energy-efficient electrotechnical applications. These materials are produced in the form of thin ribbons or bulk rods via rapid solidification, which allows for the precise optimization of their unique soft magnetic parameters.

Research Areas

  • High-Efficiency Magnetic Cores: We engineer materials with high initial magnetic permeability, low coercivity, and high saturation magnetic flux density (up to 1.8 T). These properties make them ideal for next-generation transformer cores and magnetic chokes.
  • Minimizing Energy Dissipation: A primary goal is the reduction of core losses under both DC and AC excitations. Our studies show that these advanced alloys exhibit core losses significantly lower than traditional crystalline Fe-Si materials and ferrites, which is crucial for increasing the efficiency of modern power electronics.
  • Vibration Energy Harvesting: We are adapting these soft magnetic materials for use in vibration energy harvesting systems, particularly to power maintenance-free wireless sensor networks and medical implants. By strategically adding elements like Nb or V, we improve both the magnetic response and corrosion resistance of the alloys in diverse environments.
  • Advanced Rail Power Systems: Our research has directly contributed to the design and simulation of optimized transformer cores for rail power supply converters, where reducing the core’s mass and dimensions while maintaining high power density is a critical engineering requirement.
  • Hasiak, M., Miglierini, M., Łukiewski, M., Łaszcz, A. & Bujdoš, M. Microstructure, soft magnetic properties and applications of amorphous Fe-Co-Si-B-Mo-P alloy. AIP Advances 8, 056116 (2018). https://doi.org/10.1063/1.5007781
  • Hasiak, M. & Łaszcz, A. Effect of Annealing on Magnetic and Mechanical Behaviors of NANOPERM-Type Alloys. IEEE Transactions on Magnetics 55(2), 2000205 (2019). https://doi.org/10.1109/TMAG.2018.2883026
  • Hasiak, M., Tkaczyk, M., Łaszcz, A. & Olszewski, J. Effect of Alloying Additions on Microstructure, Mechanical and Magnetic Properties of Rapidly Cooled Bulk Fe-B-M-Cu (M = Ti, Mo and Mn) Alloys. Metallurgical and Materials Transactions A 53, 556–572 (2022). https://doi.org/10.1007/s11661-021-06530-z
  • Mech, R., Gąsiorek, J., Łaszcz, A. & Babiarczuk, B. Influence of the Nb and V Addition on the Microstructure and Corrosion Resistance of the Fe-B-Co-Si Alloy. Materials 14, 4045 (2021). https://doi.org/10.3390/ma14144045
  • Hasiak, M., Sobieszczańska, B., Łaszcz, A., Biały, M., Chęcmanowski, J., Zatoński, T., Bożemska, E. & Wawrzyńska, M. Production, Mechanical Properties and Biomedical Characterization of ZrTi-Based Bulk Metallic Glasses in Comparison with 316L Stainless Steel and Ti6Al4V Alloy. Materials 15, 252 (2022). https://doi.org/10.3390/ma15010252
Amadeusz Łaszcz
Amadeusz Łaszcz
Researcher