Magnetic tunnel junction (MTJ) devices find use in several applications based on the exploitation of the spin-transfer torque phenomenon. The ferromagnetic resonance (FMR) curve is a key characteristic of any MTJ. It is usually characterized both experimentally and numerically by performing a lot of measurements of the magnetic response to a sinusoidal field or current. Here, we propose the use of a chirp signal as excitation signal to reconstruct the FMR curve with a single measurement/simulation. A micromagnetic comparison of the proposed method with the traditional one is shown.
|Autori interni:||CARPENTIERI, Mario|
|Titolo:||Chirp spectroscopy applied to the characterization of Ferromagnetic resonance in Magnetic Tunnel Junctions|
|Rivista:||IEEE TRANSACTIONS ON MAGNETICS|
|Data di pubblicazione:||2014|
|Digital Object Identifier (DOI):||10.1109/TMAG.2014.2323269|
|Appare nelle tipologie:||1.1 Articolo in rivista|