| 摘要 |
<p>A magnetic marker capable of showing a large Barkhausen reversal, comprising a pulse-generating magnetic ribbon, and magnetic substances disposed at opposite ends of said magnetic ribbon having a coercive force smaller than the coercive force of said magnetic ribbon. The pulse-generating magnetic ribbon has an equivalent wire diameter in a range of from 60 mu m to 115 mu m and a BH loop rectangular ratio Br/Bs that is not less than 0.8. The magnetic marker is capable of generating a large Barkhausen reversal even if the length of the magnetic ribbon is short, and the magnetic marker can be made small in size without deteriorating its excellent large Barkhausen signal characteristics, namely, a pulse voltage value and high harmonic components.</p> |
