| 摘要 |
The non-zero remanence state that is associated with a single pole writer often results in self-pole-erasure (SPE). This problem has been overcome by inserting a very thin exchange de-coupling layer into the magnetic circuit of the write pole. This facilitates vortex formation at the pole tip region so the remanent field is significantly reduced, along with pole erasure. Because of the small thickness of this decoupling layer, the increase of magnetic reluctance due to the insertion of the exchange-breaking gap is negligible and the efficiency of writing is not affected.
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