| 摘要 |
<p>An amorphous magnetic material possesses a composition essentially expressed by (Fe1-a-bNiaMb)100-x-ySixBy (M denotes at least one kind of element selected from Mn, Cr, Co, Nb, V, Mo, Ta, W and Zr, 0.395</=a</=0.7, 0</=b</=0.21, 1-a-b<a, 6</=x</=18at%, 10</=y</=18at%, respectively). An amorphous magnetic material which has such a Ni rich Fe-Ni base possesses a Curie temperature Tc of 473 to 573K, the maximum magnetic flux density Bm of 0.5 to 0.9T. A ratio of residual magnetic flux density Br and the maximum magnetic flux density Bm can be controlled according to a required characteristics, and, in the case of being used in a saturable core, is set at 0.60 or more. With an amorphous magnetic material of an inexpensive Fe-Ni base, magnetic characteristics applicable in a high frequency region, thermal stability, surface smoothness can be realized.</p> |
