PURPOSE: To eliminate cracking at an end part by arranging a cut with a depth larger than that of an inclined surface of an air outflow end part of a slider at an air flow end part of a magnetic core chip in the head slider in which the magnetic core chip is inserted into the slider comprising a non-magnetic material and fastened with glass or a resin.

CONSTITUTION: A magnetic core chip 8 is made up of a bar-shaped magnetic member 1 comprising ferrite or the like, a similar U-shaped magnetic member 2 and a core 6 which is joined using glass 3 for joint and has a yoke part 4 wound with a coil and a gap part 5 for generating a magnetic field. A groove part 7 is provided on the top surface of the core 6 in such a manner that the top surface of the gap part 5 of the core 6 gives a track width. Here, it is important to provide a cut 11 at an air outflow end part of the chip 8, namely at an end on the side where a trailing ramp part is formed in such a manner that the depth (d) of an inclined surface is larger than that of the inclined surface of the ramp part. Thus, there is no glass 3 existing on the working surface of the ramp part thereby eliminating possible cracking during the working.