[10p-PA3-1~41] 10 Spintronics and Magnetics (Poster)

English Presentation

[10p-PA3-2] Investigation of Magnetic Field Distributions in Various Magnet Array Configurations for LDT-MRF Systems

〇(M1)Sana Zubair¹, Noriyuki Hirota², Tohru Suzuki², Tetsuo Uchikoshi², Shigeru Horii¹ (1.Kyoto Univ. Adv. Sci., 2.NIMS)

Keywords:

Finite element method,modulated rotating magnetic field,magnet array

Magnetic-field distributions in magnet-array configurations for a linear-drive type modulated rotating magnetic field (LDT-MRF) system were investigated using finite element method (FEMM) simulations. The effects of upper magnet width (W), Material A, and central magnetic-material configuration on rotating-field (RF) and static-field (SF) characteristics were analyzed. Four magnet-array configurations with W = 10, 12, 14, and 16 mm were examined. The central magnetic material was varied between Nd-Fe-B and Fe/Nd-Fe-B configurations, and the influence of an Fe backup component was also evaluated. The results showed that magnetic-field characteristics strongly depend on magnet-array design. Increasing W enhanced the RF component, while excessive widening tended to reduce the SF component. The Fe backup component effectively suppressed magnetic-flux leakage and enhanced magnetic-flux concentration. These findings provide useful guidelines for designing magnet arrays capable of generating desirable RF and SF characteristics in LDT-MRF systems.