| abstract |
(57) [Problem] To provide a magnetic head which is excellent in heat removal property, does not cause instability of magnetic head characteristics due to temperature rise, does not reduce output due to shaving in a finishing process, and has excellent water resistance. It is an object to provide a wafer for use and a magnetic head. SOLUTION: An insulating layer made of a film composition represented by a composition formula Al-N (1-x) -Ox (0.05 ≦ x ≦ 0.8) is provided on a wafer substrate. I do. |