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The domain wall dynamics during magnetization reversal process of glass-coated amorphous Fe77.5Si7.5B15 bistable microwire was considered. Its domain structure deriving from the magnetoelastic and shape anisotropies consists of an axial single domain and two closure domain structures at the ends, plus an outer radial-helical shell in its surface. This articles report the measured domain wall velocities,...
Amorphous Fe73.5Cu1Nb3Si15.5B7 ribbons that are 2 mm wide and 20 mum thick were prepared by the continuous stress annealing-Joule heating (CSA-JH) method in air under tensile stresses of 50 to 175 MPa. Processing parameters such as the supplied current density and the moving velocity were varied. The ribbons were annealed at various conditions, and the relationship between the developed anisotropy...
The aim of this paper is to investigate FeCuSiBNb nanocrystalline microwires as an alternative to amorphous Co-based high-permeability microwires. The anisotropy is determined through static characterization from 20degC to 250degC using a VSM (Vibrating Sample Magnetometer). The properties are comparable in term of softness, but are superior in terms of saturation magnetostriction and thermal stability...
In this study, we investigated that both magnetic switching and tunneling magnetoresistance (TMR) ratio of MTJs with the NiFeSiB free layer. The junctions were fabricated by a photolithographic patterning procedure and ion beam etching. A magnetic field of 100 Oe was applied during deposition to induce the uniaxial magnetic anisotropy in ferromagnetic layer.The NiFeSiB layers were used to substitute...
A cantilevered actuator is fabricated in this study by sputter deposition using amorphous Fe72Si14B14 as the magnetostrictive material. The displacement of the cantilever is observed with applying the magnetic field of 10 kA/m to the width direction of the cantilever. Results show that the displacement of the cantilever increased with decreasing substrate thickness, and has a peak value at the thickness...
In this study, we investigated the TMR effects in CoFeB/MgO/Heusler alloys (Co2FeSi and Co2MnSi) magnetic tunnel junctions. Both Co2FeSi and Co2MnSi heusler alloys have half-metallic band structure and high Curie temperature of 1200K and 985K, respectively. Moreover, the lattice mismatch between the Heusler alloys and MgO barrier is relatively small, which indicates that the highly textured Heusler...
Soft magnetic alloys have useful DC properties such as high saturation magnetization, low coercivity, and good mechanical stability.However, for applications at frequencies in the MHz range, eddy currents and increased loss impose serious limitations. By forming polymer composites with separated particles of these magnetic alloys, it is expected that losses can be reduced at these frequencies. In...
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