Cross measurements of thin-film permeability up to UHF range

Hysteretic behavior of the dynamic permeability on a Ni-Fe thin film

“…4 The capabilities of this permeameter have been validated through cross comparisons with different techniques. 5,6 The permeability along the easy axis was checked to be close to unity, within experimental errors. The permeability along the hard axis was measured for different values of the field applied parallel to the easy axis using Helmholtz coils.…”

In situ monitoring of the magnetization rotation of a soft layer using microwave permeability measurements

“…To our knowledge, the in situ monitoring of the thermal annealing has not gained significant attention, and most investigations on annealing kinetics rely on sample picking after different annealing times and measurements at room temperature. The development of magnetic thin films for high frequency applications has induced significant progress in microwave permeability measurement techniques [3]. In particular, high-temperature microwave permeability measurements have been recently demonstrated [4].…”

Challenges in optimizing the magnetic properties of bulk soft magnetic materials

“…The frequency profile of some of Table 1 First amorphous FeCoBSi(80 nm)/NiFe(20 nm) bilayer [10]; CEA-made 0.14-mm-thick nanocryst. CoNbZr film [11]; metal-oxide layer, CoFeAlO: [12].and CoFe-SiO 2 : [13]; Fe-Si/Mn-Ir exchange bias film [14]; Fe/Fe 3 O 4 nanocomposite.…”