A magnetic write head having a magnetic cross yoke arranged to provide a cross magnetic field in a pole tip region of the magnetic head. The cross field, which is perpendicular to the magnetization of write pole, reduces the switching time of the write field, thereby increasing the speed with which the...http://www.google.fr/patents/US7889458?utm_source=gb-gplus-shareBrevet US7889458 - Write head with self-cross biased pole for high speed magnetic recording
Write head with self-cross biased pole for high speed magnetic recording