We examined the write performance of heads with a CoNiFe/NiFe composite write pole. The saturation induction B/sub s/ of the CoNiFe film was 2.1 T (21 kG). The CoNiFe layer thickness was typically 0.5-0.6 /spl mu/m, and the rest of the write pole was composed of Ni/sub 80/Fe/sub 20/. The dual high B/sub s/ layer structure with the CoNiFe films on both sides of the write gap gave excellent overwrite performance. It was over 30 dB for a medium that had a high coercivity of 560 kA/m (7.0 kOe).
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机译：我们检查了具有CoNiFe / NiFe复合写入极的磁头的写入性能。 CoNiFe膜的饱和感应强度B / sub s /为2.1 T（21 kG）。 CoNiFe层的厚度通常为0.5-0.6 / splμu/ m，其余写极由Ni / sub 80 / Fe / sub 20 /组成。写入间隙两侧均具有CoNiFe膜的双高B / sub s /层结构具有出色的覆盖性能。高矫顽力为560 kA / m（7.0 kOe）的介质超过30 dB。
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