Title :
Smart measurement setup for spin-wave linewidth ΔHk
Author_Institution :
Adv. Ferrite Technol. GmbH, Backnang, Germany
fDate :
9/1/2002 12:00:00 AM
Abstract :
A new setup for measuring spinwave linewidth ΔHk is described. By use of a dielectric resonator instead of a standard waveguide resonator it is possible to realize much higher microwave magnetic fields at the sample position. Due to the smaller size of the resonator and a more efficient field distribution, the necessary microwave power can be reduced by nearly a factor of 300. Therefore, it is possible to measure spinwave linewidth ΔHk up to 20 Oe (1.6 kA/m) with only 20-W microwave power.
Keywords :
dielectric resonators; ferrite devices; ferrites; ferromagnetic resonance; magnetic microwave devices; microwave measurement; spectral line breadth; 20 W; Bessel functions; Suhl instabilities; cylindrical cavity; dielectric resonator; dipole field; efficient field distribution; higher microwave magnetic fields; magnetic microwave devices; parallel pump; perpendicular pump; puck resonator; shielded resonator; smart measurement setup; spinwave linewidth measurements; transmission-type measurements; Dielectric measurements; Ferrites; Frequency estimation; Magnetic field measurement; Magnetic materials; Microwave devices; Microwave magnetics; Microwave measurements; Power measurement; Tellurium;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802490
