Jpn. J. Appl. Phys. 23 (1984) pp. 580-584  |Next Article|  |Table of Contents|
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Hard Magnetic MnAl and MnBi Ribbons Made from Molten State by Rapid Cooling

Yujiro Nagata, Hiroyuki Sano and Keizo Ohta

(Received October 4, 1983; accepted for publication February 25, 1984)

MnAl and MnBi ribbons were made from the molten alloys by the single-roller rapid-quenching technique, and their crystallographical, mechanical and magnetic properties were studied. Long, flexible MnAl ribbons were produced, and the ferromagnetic τ-phase was obtained by a simple annealing treatment. The best magnetic properties were B_r=3.75 kG, _IH_c=1.83 kOe and (BH)_max=2.1 MGOe for 56 at%MnAl ribbon. The MnBi ribbons were short and brittle, but they appear to be more stable chemically than the cast alloy. The best characteristics of the MnBi ribbons were B_r=3 kG, _IH_c=1.5 kOe and (BH)_max=1.6 MGOe.

URL: http://jjap.jsap.jp/link?JJAP/23/580/
DOI: 10.1143/JJAP.23.580

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