公开(公告)号：DE69018917D1

公开(公告)日：1995-06-01

申请号：DE69018917

申请日：1990-09-28

Applicant: IBM

Inventor： OGASAWARA KENJI ,  KURACHI KOJI ,  TOBARI ATUSHI

IPC: G11B5/02 ,  G11B5/09 ,  G11B5/245 ,  G11B5/00 ,  G11B5/187

Abstract: A magnetic data storage apparatus employs a magnetic head which has a non-magnetic gap member (3) disposed in a magnetic body (1, 2) with positive magnetostriction constant. During reading of data from a recording medium by a coil (4) wound around the magnetic body, a dc bias magnetic field is caused to be generated in the magnetic body. This field causes a magnetostriction effect in the magnetic body which compresses the gap member thereby cancelling the tensile stress generated by the expansion rate difference between gap member and magnetic body.

公开(公告)号：DE69018917T2

公开(公告)日：1995-11-23

申请号：DE69018917

申请日：1990-09-28

Applicant: IBM

Inventor： OGASAWARA KENJI ,  KURACHI KOJI ,  TOBARI ATUSHI

IPC: G11B5/02 ,  G11B5/09 ,  G11B5/245 ,  G11B5/00 ,  G11B5/187

Abstract: A magnetic data storage apparatus employs a magnetic head which has a non-magnetic gap member (3) disposed in a magnetic body (1, 2) with positive magnetostriction constant. During reading of data from a recording medium by a coil (4) wound around the magnetic body, a dc bias magnetic field is caused to be generated in the magnetic body. This field causes a magnetostriction effect in the magnetic body which compresses the gap member thereby cancelling the tensile stress generated by the expansion rate difference between gap member and magnetic body.