Ferromagnetic Resonance Spectroscopy setup

Cryomagnet Limited System

Ferromagnetic resonance (FMR) is a powerful experimental technique for studying ferromagnetic materials. It is used to measure the gyromagnetic ratio, anisotropy field, and damping constant of magnetic materials. This system uses a coplanar waveguide probe and vector network analyzer to measure the microwave absorption in a thin film sample as a function of DC field.

Capabilities:

  • Broadband FMR measurement (up to 43.5 GHz)
  • Magnetic fields up to 5 T
  • Magnetic field resolution better than 1 mT
  • Full 2-port S parameters analysis (magnitude and phase)
  • In-plane and out-of-plane FMR measurement
  • Sample size up to 10 mm x 10 mm x 1 mm
  • Automatically controlled by Labview

Example Data:

FMR response of Ni flake composite in plane

Br vs Freq of Ni flake composite in plane