A coplanar waveguide permeameter for studying high-frequency properties of soft magnetic materials.

Autor: Ding, Y., Klemmer, T. J., Crawford, T. M.
Předmět:
Zdroj: Journal of Applied Physics; 9/1/2004, Vol. 96 Issue 5, p2969-2972, 4p, 2 Diagrams, 3 Graphs
Abstrakt: The high-frequency relative permeability of thin permalloy films was measured in the frequency and time domain using a microwave coplanar waveguide (CPW). Frequency domain measurements using a loop permeameter were performed for comparison. The Fourier transform of the time domain measurement, and the frequency domain measurement on the CPW agree closely, both showing a higher-frequency secondary resonance peak which is not seen with the loop measurement. This resonance likely arises from the lowest-order perpendicular standing spin wave mode of the permalloy film. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index