Investigation of the magnetic stability of cobalt-based as-quenched amorphous alloys

The magnetic stabilities of several amorphous alloys of the series (Co 74.5 − x Fe x )Mo 1.5B 11Si 13 ( x = 3.9–5.0) have been studied. The experimental data show that the decrease in the permeability with increasing aging time at about 100 °C is closely related to the absolute value of the saturati...

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Published in:Materials science and engineering 1988-03, Vol.99 (1), p.87-89
Main Authors: Ho, Kai-Yuan, Lu, Xing, Ba, Qi-Xian
Format: Article
Language:English
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Summary:The magnetic stabilities of several amorphous alloys of the series (Co 74.5 − x Fe x )Mo 1.5B 11Si 13 ( x = 3.9–5.0) have been studied. The experimental data show that the decrease in the permeability with increasing aging time at about 100 °C is closely related to the absolute value of the saturation magnetostriction ∣ λ s ∣. An alloy with larger ∣ λ s ∣ exhibits a higher magnetic stability. It has been found that there is a linear relationship between H c and ∣ λ s ∣ of as-quenched samples. By introducing the equation μ m = M s 2/( αK + βλ s σ), the experimental results have been explained well.
ISSN:0025-5416
DOI:10.1016/0025-5416(88)90298-4