On the mechanisms limiting power loss in amorphous CoFeB-based melt-spun ribbons

Coercivity and Magnetic Anisotropy of (Fe0.76Si0.09B0.10P0.05)97.5Nb2.0Cu0.5 Amorphous and Nanocrystalline Alloy Produced by Gas Atomization Process

“…Consequently, the magnetization reversal process is dominated by the pinning of domain walls due to the roughness of the surface of the particle. Conversely, in a multi-domain regime, the magnetization reversal process is due to the domain wall motion [18], and the domain wall propagates in an energy landscape influenced by some of the factors, such as grain boundaries, surface roughness, and defects. Therefore, the potential barriers and potential minima, the so-called pinning sites, inhibit the nucleation and propagation of the domain walls.…”

Frequency dependence of coercivity in nickel and Co–Fe–B thin film for DC to 100 kHz region

“…Soft magnetic materials are important for transformers and inductors. [1][2][3][4] In the application of electrical passive components, the suppression of the so-called iron loss is crucial to enhance efficiency. In recent years, increasing the operating frequency of a power supply, one of the largest applications of inductors and transformers, has led to the requirement for a deeper understanding of the kHz to MHz region.…”

“…Iron loss consists of hysteresis, eddy, and anomalous losses. [1][2][3][4][5][6][7] Hysteresis loss is independent of the frequency of the applied magnetic field. In contrast, the eddy and anomalous losses are functions of the time derivative of the applied magnetic field.…”