We investigate the magnetoelastic properties of and thin films by measuring the mechanical properties of a doubly clamped string resonator covered with multilayer stacks containing these films. For the magnetostrictive constants, we find and at room temperature, in contrast to the positive magnetostriction previously found in bulk CoFe crystals. thin films unite low damping and sizable magnetostriction and are thus a prime candidate for micromechanical magnonic applications, such as sensors and hybrid phonon-magnon systems.
Magnetoelasticity of Co25Fe75 thin films
Daniel Schwienbacher, Matthias Pernpeintner, Lukas Liensberger, Eric R. J. Edwards, Hans T. Nembach, Justin M. Shaw, Mathias Weiler, Rudolf Gross, Hans Huebl; Magnetoelasticity of Co25Fe75 thin films. J. Appl. Phys. 14 September 2019; 126 (10): 103902. https://doi.org/10.1063/1.5116314
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