High-Frequency Domain-Wall Motionand Magnetization Rotation ofPatterned Permalloy FilmsunderExternal Magnetic Field Excitation

Abstract- The incorporation of ferromagnetic materials into integratedmicrowavedevices [l1-13]. Thesuccessthereinisintegrated microwave devices is a promising approach for the mixedsofar. Onthe one hand, it is generallyrecognizedthatdevelopment of on-chip high-performance circuit components. domain-wall motion is less desirable than magnetizationTherefore, high-frequency domain-wall motion and rotation because it is perceived to be a slower process with magnetization rotation, which yield permeability, are of primaryinterest. However, so far it has not been attempted to largerpo n ce onlywors at lowerifequeny). Th physically separate high-frequency domain-wall motion and corresponding domain-wall loss 1S sometimes termed asmagnetization rotation that are under high-frequency magnetic anomalouseddy-currentloss [14]. TheresultsinRefs. [7,field excitation. Norhave there attempts for the corresponding 13] seemto corroborate this notion. Onthe otherhand, therecharacterizations. In this work, patterned permalloy