Magnetization pinning in conducting films demonstrated using broadband ferromagnetic resonance

Abstract

The broadband microstrip ferromagnetic resonance technique has been applied for detection and characterization of a magnetic inhomogeneity in a film sample. In the case of a 100nm thick Permalloy film an additional magnetically depleted top sub-layer, practically unidentifiable by the conventional ferromagnetic resonance setup, has been detected and characterized. These results have been confirmed by Brillouin light scattering spectroscopy revealing the fact that the optical properties of the additional sub-layer do not differ much from those of the bulk of the film. Subsequent characterization of a large number of other presumably single-layer films with thicknesses in the range 30-100nm using the same ferromagnetic resonance technique also revealed the same effect.

References in corpus (2)

• Realization of XNOR and NAND spin-wave logic gates
• Dynamic pinning at a Py/Co interface measured using inductive magnetometry

Cited by in corpus (7)

• Frequency non-reciprocity of surface spin wave in Permalloy thin films
• Nonreciprocal Dispersion of Spin Waves in Ferromagnetic Thin Films Covered with a Finite-Conductivity Metal
• Brillouin Light Scattering Spectra as local Temperature Sensors for Thermal Magnons and Acoustic Phonons
• Non-reciprocal Oersted field contribution to the current-induced frequency shift of magnetostatic surface waves
• Coupling of microwave magnetic dynamics in thin ferromagnetic films to stripline transducers in the geometry of the broadband stripline ferromagnetic resonance
• Impact of eddy currents on the dispersion relation of surface spin waves in thin conducting magnetic films
• A rigorous two-dimensional model for the stripline ferromagnetic resonance response of metallic ferromagnetic films