Restoration of amorphous atomic structure and magnetic domains in Re‒TM‒B microwires by thermal and laser processing

Dvoretskaya E.V., Potapov M.V., Piskorsky V.P., Morgunov R.B.
UDC
621.78
DOI
10.18577/2307-6046-2026-0-2-127-138
Article PDF (Russian) (1.63 MB)
How to cite
Dvoretskaya E.V., Potapov M.V., Piskorsky V.P., Morgunov R.B. Restoration of amorphous atomic structure and magnetic domains in Re‒TM‒B microwires by thermal and laser processing // Proceedings of VIAM. 2026. No. 2. DOI: 10.18577/2307-6046-2026-0-2-127-138. URL: https://test.viam.ru/en/journal/2026/2/12
Keywords
ferromagnetic microwires, laser profiling, domain structure, hard magnetic phase, micromagnets, rare earth alloys
Abstract

Vacuum annealing of the initially amorphous microwire with the (PrDy)–(CoFe)–B composition leads to the formation of a polycrystalline structure containing a magnetically hard tetragonal phase (PrDy)2–(CoFe)14–B1 and a magnetically soft cubic Fe phase. This results in a significant broadening of the magnetic hysteresis loop and the disappearance of domains. Local laser irradiation induces local surface recovery of the amorphous structure along a predetermined path of the laser beam. In the irradiated zone, the domain structure is restored.

Reference list
  1. Gemelli A., Tambussi M., Fusetto S. et al. Recent Trends in Structures and Interfaces of MEMS Transducers for Audio Applications: A Review. Micromachines, 2023, vol. 14 (4), p. 847. DOI: 10.3390/mi14040847.
  2. Chircov C., Grumezescu A.M. Microelectromechanical Systems (MEMS) for Biomedical Applications. Micromachines, 2022, vol. 13 (2), p. 164. DOI: 10.3390/mi13020164.
  3. Algamili A.S., Mohd Khir M.H., Dennis J.O. et al. A Review of Actuation and Sensing Mechanisms in MEMS-Based Sensor Devices. Nanoscale Research Letters, 2021, vol. 16 (16), pp. 1–21. DOI: 10.1186/s11671-021-03481-7.
  4. Sawane M., Prasad M. MEMS piezoelectric sensor for self-powered devices: A review. Materials Science in Semiconductor Processing, 2023, vol. 158, pp. 107324. DOI: 10.1016/j.mssp.2023.107324.
  5. Pagliano S., Marschner D.E., Maillard D. et al. Micro 3D printing of a functional MEMS accelerometer. Microsystems & Nanoengineering, 2022, vol. 8 (105), pp. 1–11. DOI: 10.1038/s41378-022-00440-9.
  6. He J.-H., He C.-H., Qian M.-Y., Alsolami A.A. Piezoelectric Biosensor based on ultrasensitive MEMS system. Sensors and Actuators A: Physical, 2024, vol. 376, p. 115664. DOI: 10.1016/j.sna.2024.115664.
  7. Kablov E.N., Kondrashov S.V., Melnikov A.A., Schur P.A. Application of functional and adaptive materials obtained by 3D printing (review). Trudy VIAM, 2022, no. 2 (108), pp. 32–51. Available at: http://www.viam-works.ru (accessed: April 30, 2025). DOI: 10.18577/2307-6046-2022-0-2-32-51.
  8. Imboden M., Morrison J., Lowell E. et al. Controlling Levitation and Enhancing Displacementin Electrostatic Comb Drives of MEMS Actuators. Journal of Microelectromechanical Systems, 2014, vol. 23 (5), pp. 1063–1072. DOI: 10.1109/JMEMS.2014.2303898.
  9. Zhou G., Lim Z.H., Qi Y. et al. MEMS gratings and their applications. International Journal of Optomechatronics, 2021, vol. 15 (1), pp. 61–86. DOI: 10.1080/15599612.2021.1892248.
  10. Büttgenbach S., Feldmann M. Electromagnetic Parallel Microrobot for Micro- and Nano-Handling. IFAC Proceedings Volumes, 2008, vol. 41 (2), pp. 12757–12762. DOI: 10.3182/20080706-5-KR-1001.02158.
  11. Schonhardt S., Korvink J.G., Mohr J. et al. Magnetic comb drive actuator. 21st International Conference on Micro Electro Mechanical Systems. Institute of Electrical and Electronics Engineers, 2008, pp. 479–482. DOI: 10.1109/MEMSYS.2008.4443697.
  12. Xia N., Hunt T.P., Mayers B.T. et al. Combined microfluidic-micromagnetic separation of living cells in continuous flow. Biomedical microdevices, 2006, vol. 8 (4), pр. 299–308. DOI: 10.1007/s10544-006-0033-0.
  13. Chen H., Li Y., Zhang Z., Wang S. Immunomagnetic separation of circulating tumor cells with microfluidic chips and their clinical applications. Biomicrofluidics, 2020, vol. 14 (4), p. 041502. DOI: 10.1063/5.0005373.
  14. Korolev D.V., Piskorskii V.P., Valeev R.A., Bakradze M.M., Dvoretskaya E.V., Koplak O.V., Morgunov R.B. Rare-earth RE–TM–B micromagnets engineering (review). Aviation materials and technology, 2021, no. 1 (62), pp. 44–60. Available at: http://www.journal.viam.ru (accessed: April 30, 2025). DOI: 10.18577/2713-0193-2021-0-1-44-60.
  15. Corte-León P., Zhukova V., Blanco J.M. et al. Engineering of domain wall propagation in magnetic microwires with graded magnetic anisotropy. Applied Materials Today, 2022, vol. 26, p. 101263. DOI: 10.1016/j.apmt.2021.101263.
  16. Onufer J., Duranka P., Ziman J. et al. Effects of thermal treatment and temperature on domain wall dynamics in magnetic microwire. Journal of Magnetism and Magnetic Materials, 2023, vol. 586, p. 171169. DOI: 10.1016/j.jmmm.2023.171169.
  17. Onufer J., Ziman J., Duranka P., Kladivová M. Dynamics of a single domain wall between axial domains in magnetic microwire. IEEE Transactions on Magnetics, 2024, vol. 61 (6), pp. 1–4. DOI: 10.1109/TMAG.2024.3481468.
  18. Dvoretskaya E.V., Potapov M.V., Valeev R.A., Piskorsky V.P., Morgunov R.B. Magnetore-sistance of microneedles (Pr, Dy)(Fe, Co)B. Trudy VIAM, 2025, no. 2 (144), pp. 46–59. Available at: http://www.viam-works.ru (accessed: April 30, 2025). DOI: 10.18577/2307-6046-2025-0-1-46-59.
  19. Dvoretskaya E.V., Korolev D.V., Piskorskii V.P., Valeev R.A., Koplak O.V., Morgunov R.B. Magnetron sputtering of the iron shell and microinclusions in microwires PrDyFeCoB. Aviation materials and technologies, 2022, no. 2 (67), pp. 85–96. Available at: http://www.journal.viam.ru (accessed: April 30, 2025). DOI: 10.18577/2713-0193-2022-0-2-85-96.
  20. Kabanov Yu., Zhukov A., Zhukova V., Gonzalez J. Magnetic domain structure of wires studied by using the magneto-optical indicator film method. Applied Physics Letters, 2005, vol. 87, p. 142507. DOI: 10.1063/1.2077854.