Excitation and reception of magnetostatic surface spin waves in thin conducting ferromagnetic films by coplanar microwave antennas. Part II: Experiment

TL;DR

This paper presents experimental measurements of magnetostatic surface spin waves in thin ferromagnetic films using coplanar microwave antennas, supported by advanced modeling and multiple magnetic characterization techniques.

Contribution

It introduces detailed experimental analysis of spin wave propagation in ferromagnetic films with new modeling and de-embedding methods.

Findings

Quantitative agreement between measurements and theoretical models.

Magnetic parameters accurately determined by complementary techniques.

Spin wave signals successfully analyzed across a wide magnetic field range.

Abstract

We report on propagating spin-wave spectroscopy measurements carried out on coplanar nano-antenna devices made from a Si/SiO$_2$/Ru(5nm)/Co(20)/Pt(5nm) film. The measurements were analyzed in detail by employing newly developed theoretical modeling and de-embedding procedures. The magnetic parameters of the film were determined by complementary Brillouin light scattering and ferromagnetic resonance measurements. The propagating spin wave signals could be accounted for quantitatively for the range of externally applied magnetic fields investigated in this study: 130-1500 Oe.