Broadband ferromagnetic resonance ofNi81Fe19wires using a rectifying effect

Broadband ferromagnetic resonance linewidth measurement of magnetic tunnel junction multilayers

The broadband ferromagnetic resonance FMR linewidth of the free layer of magnetic tunnel junctions is used as a simple diagnostic of the quality of the magnetic structure. The FMR linewidth increases near the field regions of free layer reversal and pinned layer reversal, and this increase correlates with an increase in magnetic hysteresis in unpatterned films, low-frequency noise in patterned ...

Ferromagnetic resonance

Ferromagnetic Resonance

Ferromagnetism is used to characterize magnetic behavior of a material, such as the strong attraction to a permanent magnet. The origin of this strong magnetism is the presence of a spontaneous magnetization which is produced by a parallel alignment of spins. Instead of a parallel alignment of all the spins, there can be an anti-parallel alignment of unequal spins. This results in a spontaneous...

Effect of Dislocations on the Ferromagnetic Resonance Linewidth

We analyse a continuous magnon spectrum which is excited in FMR in a ferromagnetic sample with dislocations. Calculations are presented for the moments of the uniform mode. Numerical comparisons of the moment method with literature data and the Born approximation are given for the broadening of the resonance line. In monocrystalline ferromagnets, the dislocations have the remarkable effect on r...

Localized domain-wall excitations in patterned magnetic dots probed by broadband ferromagnetic resonance

F. G. Aliev,1,* A. A. Awad,1 D. Dieleman,1 A. Lara,1 V. Metlushko,2 and K. Y. Guslienko3,4 1Departamento Fı́sica de la Materia Condensada, CIII, Universidad Autónoma de Madrid, 28049 Madrid, Spain 2Department of Electrical & Computer Engineering, University of Illinois at Chicago, Chicago, IL, USA 3Departamento Fı́sica de Materiales, Universidad del Paı́s Vasco, 20018 San Sebastian, Spain 4IKERBAS...