Magnetoelectric Coupling in Pb(Zr,Ti)O3/CoFeB Nanoscale Waveguides Studied by Propagating Spin-Wave Spectroscopy
Abstract: This study introduces a method for the characterization of the magnetoelectric coupling in nanoscale Pb(Zr,Ti)O3/CoFeB thin film composites based on propagating spin-wave spectroscopy. Finite element simulations of the strain distribution in the devices indicated that the magnetoelastic effective field in the CoFeB waveguides was maximized in the Damon - Eshbach configuration. All-electrical broadband propagating spin-wave transmission measurements were conducted on Pb(Zr,Ti)O3/CoFeB magnetoelectric waveguides with lateral dimensions down to 700 nm. The results demonstrated that the spin-wave resonance frequency can be modulated by applying a bias voltage to Pb(Zr,Ti)O3. The modulation is hysteretic due to the ferroelastic behavior of Pb(Zr,Ti)O3. An analytical model was then used to correlate the change in resonance frequency to the induced magnetoelastic field in the magnetostrictive CoFeB waveguide. We observe a hysteresis magnetoelastic field strength with values as large as 5.61 mT, and a non-linear magnetoelectric coupling coefficient with a maximum value of 1.69 mT/V.
- I. Zdru, C. Nastase, L.N. Hess, F. Ciubotaru, A. Nicoloiu, D. Vasilache, M. Dekkers, M. Geilen, C. Ciornei, G. Boldeiu, A. Dinescu, C. Adelmann, M. Weiler, P. Pirro, and A. Muller, “A GHz Operating CMOS Compatible ScAlN Based SAW Resonator Used for Surface Acoustic Waves/Spin Waves Coupling,” IEEE Electron Device Letters 43,9, 1551–1554 (2022).
- T. Ikeda, “Fundamentals of Piezoelectricity”, 19th Edition, Oxford University Press (1990).
- R. Duflou, F. Ciubotaru, A. Vaysset, M. Heyns, B. Sorée, I.P. Radu, and C. Adelmann, “Micromagnetic simulations of magnetoelastic spin wave excitation in scaled magnetic waveguides,” Appl. Phys. Lett. 111, 19, 192411 (2017).
- B. A. Kalinikos, and A. N. Slavin, “Theory of dipole-exchange spin wave spectrum for ferromagnetic films with mixed exchange boundary conditions”, J. Phys C: Solid State Phys. 19, 7013–7033 (1986).
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