Title :
The magnetic properties of ultrathin FeBNbCu nanocrystalline alloy
Author :
Lee, J.S. ; Kim, K.Y. ; Noh, T.H. ; Kang, I.K. ; Yoo, Y.C.
Author_Institution :
Div. of Metals, Korea Inst. of Sci. & Technol., Seoul, South Korea
fDate :
11/1/1995 12:00:00 AM
Abstract :
The magnetic properties of ultrathin Fe83B9Nb7Cu1 nanocrystalline alloy ribbons with 7~12 μm thickness and the effects of insulation coating on ultrathin ribbons were investigated. It was found that the effective permeability at a frequency below 100 kHz decreased and the coercive force increased with decreasing ribbon thickness. However, reduction of ribbon thickness to 7 μm was very effective in improving remarkably the permeability and the core loss characteristics up to the MHz frequency range. Furthermore, the soft magnetic properties were largely enhanced by surface coating compared to that of the uncoated ribbons. From the results, we could produce new core materials with very low magnetic loss applicable to MHz excitations
Keywords :
boron alloys; coercive force; copper alloys; eddy current losses; ferromagnetic materials; iron alloys; magnetic hysteresis; magnetic permeability; nanostructured materials; niobium alloys; soft magnetic materials; surface magnetism; 100 kHz; 7 to 12 mum; Fe83B9Nb7Cu; Fe83B9Nb7Cu nanocrystalline alloy ribbons; coercive force; core loss; effective permeability; insulation coating; low magnetic loss; magnetic properties; ribbon thickness; soft magnetic properties; surface coating; ultrathin FeBNbCu nanocrystalline alloy; Coatings; Copper alloys; Frequency; Insulation; Iron alloys; Magnetic materials; Magnetic properties; Niobium alloys; Permeability; Soft magnetic materials;
Journal_Title :
Magnetics, IEEE Transactions on
