TY - JOUR
T1 - Electric-field-induced spin wave generation using multiferroic magnetoelectric cells
AU - Cherepov, Sergiy
AU - Khalili Amiri, Pedram
AU - Alzate, Juan G.
AU - Wong, Kin
AU - Lewis, Mark
AU - Upadhyaya, Pramey
AU - Nath, Jayshankar
AU - Bao, Mingqiang
AU - Bur, Alexandre
AU - Wu, Tao
AU - Carman, Gregory P.
AU - Khitun, Alexander
AU - Wang, Kang L.
PY - 2014/2/24
Y1 - 2014/2/24
N2 - In this work, we report on the demonstration of voltage-driven spin wave excitation, where spin waves are generated by multiferroic magnetoelectric (ME) cell transducers driven by an alternating voltage, rather than an electric current. A multiferroic element consisting of a magnetostrictive Ni film and a piezoelectric [Pb(Mg1/3Nb2/3)O3] (1-x)-[PbTiO3]x substrate was used for this purpose. By applying an AC voltage to the piezoelectric, an oscillating electric field is created within the piezoelectric material, which results in an alternating strain-induced magnetic anisotropy in the magnetostrictive Ni layer. The resulting anisotropy-driven magnetization oscillations propagate in the form of spin waves along a 5 μm wide Ni/NiFe waveguide. Control experiments confirm the strain-mediated origin of the spin wave excitation. The voltage-driven spin wave excitation, demonstrated in this work, can potentially be used for low-dissipation spin wave-based logic and memory elements.
AB - In this work, we report on the demonstration of voltage-driven spin wave excitation, where spin waves are generated by multiferroic magnetoelectric (ME) cell transducers driven by an alternating voltage, rather than an electric current. A multiferroic element consisting of a magnetostrictive Ni film and a piezoelectric [Pb(Mg1/3Nb2/3)O3] (1-x)-[PbTiO3]x substrate was used for this purpose. By applying an AC voltage to the piezoelectric, an oscillating electric field is created within the piezoelectric material, which results in an alternating strain-induced magnetic anisotropy in the magnetostrictive Ni layer. The resulting anisotropy-driven magnetization oscillations propagate in the form of spin waves along a 5 μm wide Ni/NiFe waveguide. Control experiments confirm the strain-mediated origin of the spin wave excitation. The voltage-driven spin wave excitation, demonstrated in this work, can potentially be used for low-dissipation spin wave-based logic and memory elements.
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U2 - 10.1063/1.4865916
DO - 10.1063/1.4865916
M3 - Article
AN - SCOPUS:84896756708
VL - 104
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 8
M1 - 082403
ER -