Soft magnetic properties of Fe-B-M-Cu (M=Hf,Zr,Nb) alloys with nanocrystalline and amorphous hybrid structure

Author

Lee, J.S. ; Kim, K.Y. ; Noh, T.H. ; Kang, I.K. ; Yoo, Y.C.

Author_Institution

Dept. of Metall. Eng., Inha Univ., Inchon, South Korea

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4845

Lastpage

4847

Abstract

The change in magnetic properties with B content and annealing temperature was investigated for Fe-B-M-Cu (M=Hf,Zr,Nb) alloys. In the high B alloys over 8 at% B, the optimum annealing temperatures revealing the excellent soft magnetic properties were below the crystallization temperatures The annealed microstructure had ultrafine BCC-Fe phase grains with a diameter of 5-7 nm and a considerably high fraction (30-50 vol.%) of interfacial amorphous phase. For these alloys, very low core loss and high effective permeability were obtained in the frequency range up to 1 MHz. These behaviors were interpreted to be due their hybrid microstructure and high electrical resistivity

Keywords

amorphous magnetic materials; annealing; boron alloys; copper alloys; crystal microstructure; electrical resistivity; ferromagnetic materials; hafnium alloys; iron alloys; magnetic particles; magnetic permeability; nanostructured materials; niobium alloys; soft magnetic materials; zirconium alloys; 1 MHz; Fe-B-M-Cu (M=Hf,Zr,Nb); FeBHfCu; FeBNbCu; FeBZrCu; amorphous hybrid structure; annealing; electrical resistivity; microstructure; nanocrystalline; permeability; ultrafine phase grains; Amorphous materials; Annealing; Core loss; Crystallization; Electric resistance; Frequency; Magnetic properties; Microstructure; Permeability; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.334241

Filename

334241