New non-magnetostrictive metallic glass

Author

O´Handley, R.C. ; Mendelsohn, L.I. ; Nesbitt, E.A.

Author_Institution

Materials Research Center, Morristown, NJ

Volume

12

Issue

6

fYear

1976

fDate

11/1/1976 12:00:00 AM

Firstpage

942

Lastpage

944

Abstract

A new metallic glass, (METGLAS^®alloy) Co74Fe6B20, has been identified which exhibits ∼ zero magnetostriction ( $|\\lambda _{s}|< 0.4\\times10^{-6}$ ). The saturation induction of this new alloy, 11.8 kG, is approximately twice that reported for other non-magnetostrictive glasses with similar transition-metal (TM) content but including the metalloids P and Al or Si in addition to B. This larger magnetization results from the weaker hybridization of the TM d-bands with the valence bands of boron than with those of other metalloids. Due to the absence of magnetostriction, no coupling between winding stresses and magnetic properties exists. Hence, as-quenched/as-wound toroids of Co74Fe6B20glass exhibit exceptional low-field magnetic properties: $H_{c} = 0.035$ Oe, $B_{r} = 9800$ gauss and $\\mu_{\\max } = 280,000$ .

Keywords

Amorphous magnetic materials/devices; Magnetostriction; Aluminum alloys; Amorphous magnetic materials; Boron alloys; Cobalt alloys; Glass; Iron alloys; Magnetic properties; Magnetization; Magnetostriction; Silicon alloys;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1976.1059134

Filename

1059134