The effects of Ag addition on the magnetic properties of an Fe{sub 87.3}Zr{sub 5.9}B{sub 6.5}Ag{sub 0.3}(at%) amorphous alloy
- Korea Electrotechnology Research Inst., Changwoon (Korea, Republic of). Amorphous Materials Research Lab.
The magnetic properties of an Fe{sub 87.3}Zr{sub 5.9}B{sub 6.5}Ag{sub 0.3} (at.%) amorphous alloy have been investigated as a function of annealing temperatures in order to know its potential applicability as core material for high-frequency applications. A very excellent soft magnetic material was developed. The amorphous alloy, which was annealed at T{sub a} = 400 C, exhibited very high initial permeability ({mu}{sub i}) of 287,000 at 1 kHz and 2 mOe, very low coercivity (H{sub c}) of 15 mOe, and low core loss (W{sub c}) of 50 W/kg at 100 kHz and 0.1 T, respectively. It is notable that the values obtained in the present study are the best magnetic properties among various kinds of Fe-based soft amorphous materials reported up to now. The reason for the achievement of good soft magnetic properties is presumably due to the homogeneous formation of very fine {alpha}-Fe clusters of size 2--3 nm in an amorphous matrix, which can be deduced from an increase of resistivity and transmission electron microscopy (TEM) observation. The very fine {alpha}-Fe clusters, embedded in an amorphous matrix, had a great influence on the reduction of magnetostriction and refinement of the magnetic domain.
- OSTI ID:
- 282406
- Journal Information:
- IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 4Pt2 Vol. 32; ISSN IEMGAQ; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
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