Fe-Si-N膜を主磁極とする単磁極ヘッドの記録再生特性

抄録

  Many papers have reported on Fe-N films, because of the material's high saturation magnetic flux density and permeability. However, there have been few studies of the read-write characteristics of this material. We have already drawn attention to the remarkably large head noise induced from this film in a single-pole head. To find a way of eliminating this disadvantage, we investigated the conditions of the deposition process. As a result, we found that the stress and the magnetostriction of films have to be controlled in order to suppress the head noise and to achieve high read-sensitivity. We also determined the optimum range of the stress and magnetostriction. Both high permeability and low head noise were obtained in the films deposited under these specific conditions. An improvement in the overwrite characteristics was also confirmed.