Magnetic head apparatus having non-magnetic metal interposed between piezoelectric members

摘要

A magnetic head apparatus has a piezoelectric element comprising a pair of piezoelectric members. A magnetic head is mounted on the piezoelectric element and records/reproduces desired data. A non-magnetic metal member having a predetermined coefficient of thermal expansion is formed between the piezoelectric members. A driving circuit is connected to the piezoelectric element and the non-magnetic metal member, and drives the magnetic head in a direction substantially perpendicular to the head trace direction, by applying a predetermined voltage.