High frequency characterization of Galfenol minor flux density loops

Abstract

This paper presents the first measurement of ring-shaped Galfenol’s high frequency-dependent minor flux density loops. The frequencies of applied AC magnetic field are 1k, 5k, 10k, 50k, 100k, 200k, 300k, 500 kHz. The measurements show that the cycle area between the flux density and magnetic field curves increase with increasing frequency. High frequency-dependent characterization, including coercivity, specific power loss, residual induction, and maximum relative permeability are discussed. Minor loops for different max induction are also measured and discussed at the same frequency 100 kHz. Minor loops with the same max induction 0.05 T for different frequencies 50, 100, 200, 300, 400 kHz are measured and specific power loss are discussed.

Prospects of Using Fe-Ga Alloys for Magnetostrictive Applications at High Frequencies

“…Comparison of several common magnetostrictive alloys in terms of the main properties important in the context of their use at elevated frequencies. Data taken from literary sources [34][35][36][37][38]. The information for bulk as cast polycrystalline samples is preferably used.…”