Magnetic head having cut-out portions for different recording density head cores

The magnetic head 11 is structured such that a high-density recording head core 13 and a normal recording head core 14 are assembled integrally into the same slider 12. In the same side surface of the slider 12, there are formed a first cut-out portion 15 into which the high-density recording head core 13 can be inserted, and a second cut-out portion 16 into which the normal recording head core 14 can be inserted. The two cut-out portions 15 and 16 are formed in such a manner that they respectively extend in the rotational direction (A direction) of a magnetic disc. The two kinds of head cores 13 and 14 having different recording densities are respectively inserted into and the core hold portions 18 and 19 of the cut-out portions 15 and 16 opened up in the same side surface of the slider 12, and are then fixed thereto with adhesives 24 and 25. The two head cores 13 and 14 are assembled into the cut-out portions 15 and 16 from the same direction and are then fixed to the hold portions 18 and 19 in such a manner that they are arranged in parallel to each other.