Title :
Magnetic properties of high Bs nanocrystalline FeCoCuNbSiB alloys
Author :
Yoshizawa, Yoshihito ; Ogawa, Yuichi
Author_Institution :
Adv. Electron. Res. Lab., Hitachi Metals Ltd., Saitama, Japan
Abstract :
The magnetic properties of high Bs nanocrystalline FeCoCuNbSiB alloys with low Si content annealed under a transverse magnetic field have been studied. The magnetic induction at 8000 A·m-1, B8000 increased with Co content x up to 30 and takes a maximum value of 1.71 T at x=30. In addition, this alloy showed the linear B-H loop and the low core loss of 370 kW · m-3 (47 W · kg-1) at 100 kHz, 0.2 T. Hence, nanocrystalline FeCoCuNbSiB alloys promise as core materials for inductors and transformers in the high frequency range because of their high saturation magnetic induction, low core loss, and linear B-H loop.
Keywords :
cobalt alloys; copper alloys; electromagnetic induction; iron alloys; magnetic cores; magnetic fields; nanostructured materials; soft magnetic materials; 0.2 T; 100 kHz; FeCoCuNbSiB; core material; inductor; linear B-H loop; low core loss; magnetic induction; magnetic property; nanocrystalline alloy; soft magnetic material; transformer; transverse magnetic field; Annealing; Core loss; Inductors; Magnetic cores; Magnetic fields; Magnetic materials; Magnetic properties; Saturation magnetization; Silicon alloys; Transformer cores; Core losses; FeCo alloys; magnetic induction; nanocrystalline alloy; soft magnetic materials;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854898
