Presentation Information
[7p-P03-18]Wall Width Modulation Effects on Magnonic Band Structure: A Kronig–Penney Model Analysis
〇Taisuke Horaguchi1, Takashi Manago1 (1.Fukuoka Univ.)
Keywords:
Spin Waves,Magnonic crystal
We investigated how variations in the duty ratio—defined by the relative width of walls and valleys—affect the magnonic band structure in a 1D magnonic crystal. Using both micromagnetic simulations and a Kronig–Penney-type analytical model incorporating spin-wave dispersion, we calculated the first and second bandgap widths as functions of wall width. The results revealed non-monotonic trends and showed good agreement between simulation and theory, demonstrating that the Kronig–Penney model provides a useful design guideline for band structure control in artificial magnetic crystals.