A magnetic head for a perpendicular magnetic recording system.

摘要

The head has a flat coil 6 on a ferromagnetic substrate 16. A ferromagnetic main pole piece 5 is arranged at the centre of the coil 6, vertically of the substrate surface on which the coil is provided.
<??>A magnetic core 14 is provided in the centre of the coil 6 on the substrate 16.
<??>Substrate 10-1, 10-2 carrying the main pole piece 5 may carry the flat coil 6, rather than substrate 16.
<??>A second magnetic core may be provided at the centre of the coil 6 on substrate 10-1, 10-2.
<??>Ferromagnetic substrate 16 may be replaced by a substrate having a ferromagnetic thin film 17 on a non-magnetic base 16 min .
<??>The main pole piece 5 may extend up to or through substrate 16.