Magnetoelasticity of Co25Fe75 thin films

Published

August 20, 2019

Author(s)

Daniel Schwienbacher, Matthias Pernpeintner, Lukas Liensberger, Eric R. Edwards, Hans Nembach, Justin Shaw, Mathias Weiler, Rudolf Gross, Hans Huebl

Abstract

We investigate the magnetoelastic properties of Co₂₅Fe₇₅ and Co₁₀Fe₉₀ 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 λCo₂₅Fe₇₅ = (-20.68 +/- 0.25) x 10^-6 and λCo₁₀Fe₉₀ = (-9.80 +/- 0.12) x 10^-6 at room temperature, in contrast to the positive magnetostriction previously found in bulk CoFe crystals. Co₂₅Fe₇₅ 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.

Citation

Journal of Applied Physics

Volume

126

Pub Type

Journals

Download Paper

https://doi.org/10.1063/1.5116314

Local Download

Keywords

magnetoelasticity, thin films, mechanical properties, double clamped, string resonator, micromechanical magnonic, sensors, hybrid phonon-magnon

Citation

Schwienbacher, D. , Pernpeintner, M. , Liensberger, L. , Edwards, E. , Nembach, H. , Shaw, J. , Weiler, M. , Gross, R. and Huebl, H. (2019), Magnetoelasticity of Co₂₅Fe₇₅ thin films, Journal of Applied Physics, [online], https://doi.org/10.1063/1.5116314, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=927837 (Accessed October 31, 2024)