Presentation Information
[8a-E208-7]Enhanced Magnetoelectric Control of Propagating Spin Waves via Flexoelectric Engineering in Lu-Doped YIG Thin Films
〇(D)KAMRUL HASAN1, Md Shamim Sarker1, E M K Ikball Ahamed2, Ritsuki Sonetaka1, Hiroyasu Yamahara1, Munetoshi Seki1, Hitoshi Tabata1 (1.The Univ. of Tokyo, 2.Chittagong Univ. of Engineering & Technology)
Keywords:
Spin wave,Magnetoelectric coupling
Spin waves (SWs) are promising information carriers for beyond-CMOS computing owing to their wave-based signal processing capability and ultra-low energy dissipation. Electric-field manipulation of SW propagation has attracted considerable attention as an energy-efficient alternative to current-driven control methods; however, the achievable tunability remains limited in conventional yttrium iron garnet (YIG) systems due to weak magnetoelectric coupling [1,2]. Here, we demonstrate enhanced electric-field-induced SW frequency modulation in Lu-substituted yttrium iron garnet, (YLuIG), grown on SGGG substrates. By systematically varying the Lu concentration, the lattice distortion of the garnet film is increased, resulting in significantly improved electric-field responsiveness. A maximum frequency shift of approximately 9 MHz is achieved at 400 kV/cm for IG, nearly twice that of undoped YIG, demonstrating the effectiveness of compositional strain engineering for low power magnonic applications.
References: [1] Sarker et al., Adv. Physics Res., 4, e00071 (2025) [2] Sarker et al., Sci Rep 13, 4872 (2023)
References: [1] Sarker et al., Adv. Physics Res., 4, e00071 (2025) [2] Sarker et al., Sci Rep 13, 4872 (2023)