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New Magnetic Metallic Glasses with Reduced Metalloid Content

Published online by Cambridge University Press:  15 February 2011

R. C. O'handley  and
N. J. Grant
R. C. O'handley
Affiliation:
MIT, Cambridge, MA 02139
N. J. Grant
Affiliation:
MIT, Cambridge, MA 02139
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Abstract

Several new magnetic amorphous alloys containing early transition metals (TE) and having reduced metalloid (M) content have been melt spun. Some properties of three examples of this new class, 1) Co80Nb14B6, 2) Co84Nb10B6, and 3) Fe81Nb5B14, are presented. The dominant late transition meta1 (TL) content assures an appreciable magnetic moment while the presence of an early transition metal significantly enhances the stability against crystallization. Crystallization temperatures are 1) 742K, 2) 698K, and 3) 762K for the three alloys, respectively. X-ray diffraction patterns show the materials to be amorphous and to exhibit a large-r correlation length (approximately 2.0 A) that is shorter than is typiclly observed in TL80M20 glasses containing more than one transition meta) species (approximately 2.3 − 2.5A). The coercivities of the glassy compositions range from 30 to 70 m0e.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 8 , 1981 , 217
Copyright
Copyright © Materials Research Society 1982

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References

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