Title :
Microwave resonances in nanogranular (Fe0.7Co0.3)71B22Ni7 films
Author :
Pasquale, M. ; Perero, S. ; Giorgio, B. ; Kabos, P. ; Lim, S.
Author_Institution :
IENGF, Torino
Abstract :
A detailed characterization and analysis of the microwave properties of a set of nanogranular (Fe0.7Co0.3)71B22Ni7 films under an applied magnetic dc field ranging from 0 to 45 kA/m is presented. A full microwave characterization of the films is performed up to 20 GHz using a vector network analyzer (VNA) connected to a matched microstripline or coplanar waveguide, loaded with the films. The evolution of the FMR frequencies and line-widths is derived as a function of the field applied along the easy axis (in-plane) and discussed with reference to the film nanostructure and the combination of anisotropy, demagnetizing and applied fields.
Keywords :
boron alloys; cobalt alloys; ferromagnetic materials; ferromagnetic resonance; granular materials; iron alloys; magnetic anisotropy; magnetic thin films; nanostructured materials; nickel alloys; FMR line-widths; Fe0.7Co0.3B22Ni7; anisotropy; coplanar waveguide; demagnetizing fields; ferromagnetic resonance; magnetic dc field; microstripline; microwave resonances; nanogranular films; vector network analyzer; Coplanar waveguides; Iron; Magnetic analysis; Magnetic anisotropy; Magnetic films; Magnetic properties; Microstrip; Performance analysis; Perpendicular magnetic anisotropy; Resonance;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.375435
