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
College of Science & Engineering, Aoyama Gakuin University
(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 Br=3.75 kG, IHc=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 Br=3 kG, IHc=1.5 kOe and (BH)max=1.6 MGOe.
- T. Miyazaki, Y. Okada and M. Takahashi: J. Mag. Soc. Jpn. 5 (1981) 81.
- H. Sano, Y. Nagata and K. Ohta: IEE Jpn. MAG-82-33 (1982) 45.
- M. Takahashi and T. Miyazaki: J. Mag. Soc. Jpn. 6 (1982) 22.
- K. Narita and N. Koga: J. Mag. Soc. Jpn. 5 (1981) 93.
- N. C. Koon and B. N. Das:
Appl. Phys. Lett. 30 (1981) 840[AIP Scitation].
- H. Kono: J. Phys. Soc. Jpn. 13 (1958) 1444.
- T. Ohtani, N. Kato, S. Kojima, K. Kojima, Y. Sakamoto, I. Konno, M. Tsukahara and T. Kubo: IEEE Trans. Magn. MAG-13 (1977) 1328.
- R. H. Willence: IEEE Trans. Magn., MAG-16 (1980) 1059.
- C. Guillaud: J. Rech. C.N.R.S. 2 (1949) 267.