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

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

3901

Lastpage

3903

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489810

Filename

489810