High-order standing spin wave modes in Fe19Ni81 micron wire observed by homodyne method

Abstract

The broadband spin dynamics of patterned ferromagnetic Fe 19Ni81 microwire with thickness of 80 nm has been investigated experimentally using broadband rectifying method. The rectifying effect provides a highly sensitive method to detect the high-order perpendicular standing spin wave (PSSW) mode. Present analytical calculation reproduces the observed relation between resonance frequency and applied magnetic field. The effective thickness is explained by the pinning condition of magnetic moment at the surface of the wire. © Published under licence by IOP Publishing Ltd.