Observation of localized ferromagnetic resonance in a continuous ferromagnetic film via magnetic resonance force microscopy

Abstract

We present Magnetic Resonance Force Microscopy (MRFM) measurements of Ferromagnetic Resonance (FMR) in a 50 nm thick permalloy film, tilted with respect to the direction of the external magnetic field. At small probe-sample distances the MRFM spectrum breaks up into multiple modes, which we identify as local ferromagnetic resonances confined by the magnetic field of the MRFM tip. Micromagnetic simulations support this identification of the modes and show they are stabilized in the region where the dipolar tip field has a component anti-parallel to the applied field.

4 pages, 5 figures

References in corpus (4)

• Nuclear Magnetic Resonance Imaging with 90 nm Resolution
• Magnetic resonance studies of the fundamental spin-wave modes in individual submicron Cu/NiFe/Cu perpendicularly magnetized disks
• Ferromagnetic resonance force microscopy on a thin permalloy film
• Spatial characterization of the magnetic field profile of a probe tip used in magnetic resonance force microscopy

Cited by in corpus (3)

• Damping of Confined Modes in a Ferromagnetic Thin Insulating Film: Angular Momentum Transfer Across a Nanoscale Field-defined Interface
• Experimental and Numerical Understanding of Localized Spin Wave Mode Behavior in Broadly Tunable Spatially Complex Magnetic Configurations
• Localized ferromagnetic resonance force microscopy in permalloy-cobalt films