Abstract
The compositional dependence and the annealing temperature dependence of the soft magnetic properties for the nanocrystalline Fe-M-B-Cu (M = Nb, Zr) alloys have been investigated. The high effective permeability, μe, above 100,000 at 1 kHz combined with the high saturation magnetic flux density, Bs, of 1.45 to 1.61 T have been obtained in the Fe100-a-b-c-dNbaZrbBcCud (3.25 ≤ a ≤ 3.5, b ≈ a, 6.5 ≤ c ≤ 8 and 1 ≤ d ≤ 2) alloys. These alloys consist of fine bcc grains with less than 10 nm in size and exhibit nearly or exactly zero-magnetostriction. This excellent μe value is comparable to those of nanocrystalline Fe73.5Si13.5B9Nb3Cu1 alloy and zero-magnetostrictive Co based amorphous alloys, and the high Bs is comparable to those of Fe based amorphous alloys with good soft magnetic properties. The magnetostriction of the nanocrystalline Fe-M-B based alloys also can be controlled by changing the annealing (crystallizing) temperature. The nanocrystalline Fe-M-B based alloys with excellent soft magnetic properties as well as high Bs and zero-magnetostriction are expected to be used for many kind of magnetic parts and devices.
Original language | English |
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Pages (from-to) | 723-728 |
Number of pages | 6 |
Journal | Materials Science Forum |
Volume | 235-238 |
Issue number | PART 2 |
Publication status | Published - 1997 |
Externally published | Yes |
Keywords
- Nanocrystalline alloy
- Permeability
- Saturation magnetic flux density
- Soft magnetic properties
- Zero-magnetostriction
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering