title: Cantilever detected ferromagnetic resonance in thin Fe50Ni50, Co2FeAl0.5Si0.5 and Sr2FeMoO6 films using a double modulation technique.
abstract: In this work we introduce a new method, which employs commercial piezo-cantilevers, for a ferromagnetic resonance (FMR) detection from thin, nm-size, films. Our setup has an option to rotate the sample in the magnetic field and it operates up to the high microwave frequencies of 160GHz. Using our cantilever based FMR spectrometer we have investigated a set of samples, namely quasi-bulk and 84nm film Co2FeAl0.5Si0.5 samples, 16nm Fe50Ni50 film and 150nm Sr2FeMoO6 film. Low frequency and room temperature test of our setup using 84nm Co2FeAl0.5Si0.5 film yielded a result identical to a standard X-Band spectrometer, namely a single line with quite small linewidth. Our measurements at low temperatures and high frequencies revealed a quite strong FMR response detected in all samples. The FMR spectra share common features, such as the emergence of the second line with an opposite angular dependence, and a drastic increase of the linewidths with increasing microwave frequency. We believe that these findings are results of the complicated dynamics of the magnetization at low temperatures and high frequencies, which we were able to probe using our cantilever based FMR setup.
authors: Molecular Photoscience Research Center, Kobe University, Kobe 657-8501, Japan. Electronic address: a.alfonsov@ifw-dresden.de.
authors: Alexey
authors: A
authors: Alfonsov
authors: Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada, Kobe 657-8501, Japan.
authors: Eiji
authors: E
authors: Ohmichi
authors: Leibniz Institute for Solid State and Materials Research Dresden, IFW, D-01171 Dresden, Germany.
authors: Pavel
authors: P
authors: Leksin
authors: Leibniz Institute for Solid State and Materials Research Dresden, IFW, D-01171 Dresden, Germany.
authors: Ahmad
authors: A
authors: Omar
authors: Department of Physics, The Ohio State University, Columbus, OH 43210, USA.
authors: Hailong
authors: H
authors: Wang
authors: Leibniz Institute for Solid State and Materials Research Dresden, IFW, D-01171 Dresden, Germany; Institut fur Festkörperphysik, Technische Universität Dresden, D-01062 Dresden, Germany.
authors: Sabine
authors: S
authors: Wurmehl
authors: Department of Physics, The Ohio State University, Columbus, OH 43210, USA.
authors: Fengyuan
authors: F
authors: Yang
authors: Molecular Photoscience Research Center, Kobe University, Kobe 657-8501, Japan; Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada, Kobe 657-8501, Japan.
authors: Hitoshi
authors: H
authors: Ohta
keywords: Cantilever; FMR; Ferromagnetic resonance; Halfmetals