Microwave resonances in nanogranular (Fe0.7Co0.3)71B22Ni7 films

Author

Pasquale, M. ; Perero, S. ; Giorgio, B. ; Kabos, P. ; Lim, S.

Author_Institution

IENGF, Torino

fYear

2006

fDate

8-12 May 2006

Firstpage

26

Lastpage

26

Abstract

A detailed characterization and analysis of the microwave properties of a set of nanogranular (Fe_0.7Co_0.3)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; Fe_0.7Co_0.3B₂₂Ni₇; 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.375435

Filename

4261460