Floating magnetic head with reduced magnetostriction vibration noise

摘要

In a floating magnetic head, noises produced at the time of reproduction are reduced, thereby enhancing the precision of detection of a track position. The floating magnetic head uses a monocrystal magnetic material constituting an electromagnetic transducer element, and a crystal orientation of the monocrystal magnetic material in the electromagnetic transducer element is parallel to a direction of travel of a medium. In the case of |&lgr;.sub.111 |+2× 10. sup.-6 ≦|&lgr;.sub.100 |, the crystal orientation is in the range of a solid angle of 3·sin&thgr;. multidot.cos&phgr; which satisfies 0≦&thgr; 10 degrees and 0. ltoreq.&phgr;≦360 degrees around [111], and in the case of . vertline.&lgr;.sub.111 | ≧|&lgr;.sub.100 . vertline.+2×10.sup.-6, the crystal orientation is in the range of a solid angle of sin &thgr;· cos&phgr; which satisfies 0≦. theta. 10 degrees and 0≦&phgr; ≦360 degrees around [100], where &lgr;.sub.111 and &lgr;.sub.100 respectively represent linear magnetostriction constant of the monocrystal magnetic material in directions 111 and 100 . The monocrystal magnetic material is a monocrystal MnZn ferrite whose chemical composition is represented by 20≦MnO≦40, 10≦ ZnO≦25 50≦ Fe.sub.2 O.sub.3 ≦65 in terms of mol. %.